How to find Short Circuit in your car/truck

[@bobsmith674]

You could save yourself a lot of time by just disconnecting one of the cables on the battery, then connecting the ammeter between the battery post and the disconnected cable. This will measure the total current drain from the battery for ALL circuits. Then start pulling one fuse at a time, watching the meter for a drop in current. For circuits that should not be draining current, there should be no drop. If you find a larger drop then the circuit should be draining with the engine off, then you have found a circuit with a short. Using this method you can just pull fuses quickly, one by one, without have to probe each fuse receptacle. You should connect the meter this way, to begin with, just to see how much total current is being drained with the engine off. Also, if you pull a fuse, and you get a large current drop, but you still have a large current drain, then you will know you have more than one short.

[@sunilghorpade1682]

Disconnect negative terminal of battery first 2 . connect positive terminal of multimeter to negative of battery 3 . connect negative terminal of multimeter to disconnected terminal of battery follow step by step to pull out fuses

[@MarkH10]

No ear trash in the remake. I greatly appreciate that you are open to criticism, and willing to change. Hard work, and humility are elements for success, and I think your channel growth can surge surprisingly if you are willing to do the work.

[@TheMisterPatrick]

It's so cool and great that people are making these informational videos on KZbin. Just bought myself a '73 Super Beetle, lots of stuff to fix, and all this information I'm finding on the internet helps me along a GREAT deal.

[@goodboyringo9716]

I liked the video great way to find a short or drainage and Ill be trying your way. Another way one can check a short is to remove the negative battery cable , connect a test light between the cable and the battery , (only between the negative cable and negative battery post) If it lights there is something pulling power. Next pull each fuse , if the light goes out, there in that circuit is the short or power drainage. Keep up the good work my friend.

[@AiRoSLoTH]

Screw the likes man. I love how you explain the basics. Not just for diagnosing one small problem but in a method that works so many ways and you explain it the whole way through. So viewers can develop an ACTUAL understanding of basic auto electronics. Well done bro! I don't comment often but right now I feel I have to. You're absolutely right about the maths. It may seem insignificant at the time. But OVER time... It's massive. Seriously a bro!

[@cmacia06]

Thanks man! I really appreciate that. It makes it worth doing these videos!

[@LuisMartinez-fr9gq]

Hello friend one question do you know where I can purchase wire diagramas and fuses and relays description online, i do not have the book to do this job, i have a short, but i am dying to find a good link to buy wire diagramas and the most accurate for wire colors, please help me out to to find a webpage by the way it's for a 1997 Mercury Mountaineer 5.0 engine, thanks in advance, nice video and good explanation, thanks again.

[@crockett159]

You did a great job! You thoroughly explained what's going on and what to do. You showed the math and time it takes for a battery to drain. I have a short and with your video I feel confident I will correct the problem. Thanks

[@TOPLS70]

Impressive, great delivery and easily understood. I can tell you are or will be a great mechanic. COMMON SENSE approach wins every time.

[@JICE-zd7vo]

Hey Christian, thanks for the video. I have 2008 jeep wrangler with a lot of after market upgrades. If I don't drive me jeep for 4-5 days, the battery is dead. I never thought about there being a short circuit. this video answered the mystery. keep up the good work.

[@cmacia06]

Thanks. I'm glad it was helpful!

[@joeyholley2543]

I found this post to my liking. It was very informative and now I'll try to track down the power draw on my car. Thanks

[@bugzziee]

u renewed my faith in the youth. thanks

[@cmacia06]

+s buchanan I'm glad to hear that haha! Just wish I would have done a better video at the time. I got many complaints about the music and sound quality.

[@gv4476]

Christian Macias ...music is good , may be lowered the volume down, but wasn't boring...cool stuff dude

[@arad4912]

+Christian Macias it's good enough, this is not Hollywood.

[@cr1zypayasito]

s buchanan

[@autoshackghana]

Great video. Before replacing the light, I recommend getting the wiring diagram and doing some more troubleshooting to find out exactly why the light stays on. If the light does not go off,then short is happening between the light assembly and the switch. The current is not getting to the switch so switch is unable to control the circuit as a result. Therefore there is constant power to the bulbs. Thanks for sharing.

[@LuisMartinez-fr9gq]

Hello my friend do you know a good link online to buy wiring diagrams also good description of relays and fuses i am dying to find one, please help me maybe you can send me the site or webpage, by the way it's for a mercury mountaineer 5.0 liter thanks in advance.

[@Thestudiedtheist]

My car, honda civic drained the battery in 5 days. It was the starter shorting. Since replacement, my battery goes weeks without running. App. 2 weeks. Slow crank at that length. Great video btw. I have a multimeter abd i use it alot. I love it. I test batteries, alternators, load testing and continuity to find dead lines in appliances and fuses

[@chilafouxtravis]

Really wish there was no music. very distracing. couldn't watch cause of it

[@jamesrhodes6241]

.

[@rockoeasy9150]

Smartly done. At first, I wondered why you just didn't hook up in series with the battery and start pulling fuses until the load drop...well then I deducted this a one man job. You did it the smartest way with only one person. Thanks

[@cmacia06]

That it is true! My next idea was using a set of jumper cables that could hold the multi meter probes but not everybody has jumper cables.

[@semco72057]

I like the way you troubleshooted the drain on your battery, and I remember years ago when I had a similar problem in an old Lincoln and found that it was the power seat detent was outside the button holding down the detent causing a steady drain on my battery.

[@francetich]

I really liked your instructions and how you got right to the point (other than the unnecessary footage of the trip to get the battery recharged). I liked that you covered checking that the alternator is charging the battery first. The only thing I had a hard time with was hearing you over the background music. I was trying to watch while outside, next to the vehicle with background noise, and it just made it difficult to hear what you were saying. I learned a lot, and may have enjoyed it a tiny bit more if I could hear you better over the background soundtrack. Thank you, though.

[@cmacia06]

I appreciate the feedback. Yea I know! I wish I could have left it out.

[@LUKASFELIXXIONG]

I believe this is called parasitic draw; it is not a short circuits. A short circuits would cause a blown fuse instead.

[@unknown-or5nv]

Yes that is true

[@geefisher3663]

That’s what I was thinking

[@Rudy_fit]

Yes but it’s also a short to power

[@selgal4ever]

That's very right buddy!!

[@spindizzy1969]

Great video man, nothing wrong with the background music or sound quality, you explained it well, even instructing on the tools. I'm an Electronics tech by trade been one for 30 years. Nice simple and informative.

[@davidwilcoxson2809]

Christian, Thank you for a very clear and thorough diagnosis. One problem; the irritating background noise is too loud for many of us old folk who have a hard time understanding your words because the ambient noise obliterates the consonants in many of your words; e.g. sound like train or pain or vain or shane etc. We cannot hear which because of the high volume of the music. Thanks.

[@davidizgozzy9309]

GUY ! GREAT VIDEO. BUT MUSIC DURING LEARNING IS VERY DIFFICULT. DROP THE TUNES THX FOR CREATING

[@secondlooksformen3836]

Very nice style ... and informative video. Liked your methodical way of tracing down where tge battery drain was coming from. Thanks for sharing. Cool that a young man understands a car and electrical as you do. I wish you success and happiness!

[@lmullen56]

Why put back ground music on an informational video. If you are trying to teach us something then we should concentrate on you not background noise.

[@herbmorris2762]

Excellent video. I learned a lot about this topic. Thank you.

[@jemmyyaunker2586]

This made me stop and think been doing the hard way for many years and this was so much quicker and gives you a head start on an area wanted to say thanks for the info great job

[@cmacia06]

+Jemmy Yaunker Your welcome! Thanks for watching!

[@ronsinson1989]

Thanks bro I'm in school and your video helped me out a lot. Thanks for sharing information, a lot of people I know hold it and don't share and a lot of mechanics/techs are egotistical.

[@cmacia06]

I agree with you. I can't believe how high a mechanic thinks of himself sometimes. I'm a student in electrical engineering myself, so money is tight. I can see where something like this would help! Glad I was of help!

[@hawkology2786]

Awesome video. Thanks eternally!!! I've been sitting watching my car rot!!! I had a good idea of the problem was struggling on confirming it without giving a garage a bunch of cash.

[@willsjaime]

This video was awesome bro. Very informative, very fast. Fun music. Great job.

[@stampgalore]

Nice video to the point. It does not work on my 2007 gmc. I think the negative needs to be off the battery. Your thoughts

[@michaelfortesque]

To James Lewis, sounds like you need to replace your ac clutch. Go to O"Reilly or Auto Zone and ask them to pull a new one off the shelf, then have them check the resistance with an ohm meter. Then go home and unplug the wiring harness on the clutch on your ride and see if it is the same. If it is lower, say 1 ohm or less then it is bad. You might even want to buy the new clutch and take it with you. as long as you don't install it or mess it up in any way they will let you return it. If it checks good then check the wiring from the fuse panel to the clutch to see if the two wires are melted together or to ground anywhere.

[@javierserrano6102]

you made it super simple to understand.. THANK YOU!!

[@107649365]

Did you preview the video before you posted it??? You thought this is it, it's perfect.

[@hammerhead6537]

Great video. Short and to the point, no pun intended.

[@cmacia06]

haha.

[@654ruiz]

I fixed the problem thanks for the response. I open the connectors and the relay is staying in place.

[@Truthseeker4104]

It would be helpful if you explained what Multimeter settings you started with and the reason.

[@lindalou4501]

Really good tutorial! Easy to understand and it helped to be able to actually SEE you do it! Thank you!!!

[@tnamen1307]

Very nice..my car 45 ah draw .05 amp on parasitic test when all doors are closed and everything is off. Is this too high since it drains very quickly in just 3 days only?????

[@carjacker6480]

I can hardly hear you talking because of the music

[@citizenm9590]

Great video. I have 2003 Corolla S where i have noticed my signal flash light amp keeps blowing up and because of that my signal/hazard light front and back don't work. The time it takes for the amp to blow up is from the time I replaced the amp withing 2sec or more it varies so i suspect there is a short circuit, what would you recommend the step i take to try to locate where the short circuit is or any advise how i should approach this issue?

[@chadrice5905]

Another way is to pull the negative cable from battery and hook your volt meter between the neg post and terminal. Pull all the fuses. Make sure your Volt meter is set on amp load like you did. I take a picture of fuse panel. Push in the fuses one at a time and watch the meter and wright down the ones thats drawing current. Pull it and carry on and continue until your done. You'll figure out which one is pulling over .3 I believe its what it pulls every time the computer runs through itself for security and computer faults every 15 minutes. Different makes and models are different. So this is how you START to find the big amp draws. It might be over .3 amps draw for security systems. Then the car can be actually started in two weeks before the computers draw the batteries down. Chrysler town and country mini vans 2010 and up HAS to be started every 13 days. Day 14 it will be dead. Next part is get someone or find the wire diagrams needed for that specific fuse link that covers all related connections to that specific circuit. I own a window tinting car audio shop. Owner/operator install tech with 31years in this field. Hope that helps at least 1person in the world. Then jobs done. Take care.

[@815Brandon]

You my friend are a boss!! Your video was perfect for me and helped me find my short circuit. Thanks.

[@cmacia06]

+Brandon Parker thanks! I appreciate that!!

[@speway]

I enjoyed the video. Well done. Was it actually the interior light housing that was causing the short. I was thinking that the switch on one of the doors may be stuck and/or still registering as open.

[@anwarahmed5342]

Why don't you put off the music or reduce the volume. thanks anyway.

[@Altermyego-]

Thank you great technique I have not yet utilized if I am able to diagnose and repair using this technique I will donate to your channel!

[@cmacia06]

+speckspeck I left out of town during that time and my car had not been started for quite a while. When I came back it did not turn over. The current that these circuits were drawing was not enough to drain my battery in one day but since i was gone for while, it was able to. The radio is damaged and that also did drain more current than it need to use and my lamp fixture was also stuck on. After i repaired this my car lasted over a week without draining.

[@juanitacochran333]

Christian Macias m

[@RickG1369]

Do you have to pull the fuses out though? Why not just check with you probe, can you elaborate?

[@denaliduckster]

Really nice presentation, easy to follow and informative, thanks!!!

[@joemikos9155]

Great job, really enjoyed the video. Thank you, look forward to seeing more.

[@NewLevelAuto]

Joe Mikos 🙄

[@JoSe-mi6gx]

I like the blackboard it's simple direct to the point. Always use it 🙆‍♂️

[@teflonmd7994]

Thanks for the knowledge bro. Question: Why pull out each fuse, couldn't it be tested by using the both contact ends on the back of the fuse?

[@viz38]

Need you advice over a good tester like power probe but cheap Tks you

[@dmanhattan1]

Should of left the music out, hard to hear you talk over it.....

[@TT.Loopyloop]

Definitely I moved on to a different video because I couldn’t hear him talking

[@Kevin-ql1hb]

I like the music. Great quality video. Just turn it down a bit.

[@mlez7197]

This is one of the best videos i seen i like to buy the same multimeter which bran is that one?

[@bigdaddy4975]

That’s a good way to pop your meter. I know it says a certain amount of amps but a short could go realty high

[@654ruiz]

Liked your video. One question my vehicle is over heating the relay of the fuel pump. It overheats to the point the one of the connection gets loose and it begins to fail. Extra info live arizona and it gets up to 114 degrees.

[@cmacia06]

+654ruiz Those are definitely harsh conditions. As far as i know, i haven't heard of a relay coming loose because of heat. Have you tried swapping one relay for another to see if it still comes loose? Maybe the contacts on the relay have worn down?

[@johnpinto1518]

Great explanation, very practical .

[@waynemazan7485]

nice job Christian... helped me

[@arad4912]

btw.im trying to replace fuse box in toyota camry 2004 , the under the hood one, and wonder if it's a good idea to do so and how to go about it. I see that i will have to cut and strip 100 or so cables to install a used box and wonder if it's possible to get it done without special tools and knowledge. I'm no mechanic but I'm determined to fix it,otherwise the car goes to junkyard. Toyota Dealer wanted thousands of dollars to repair it, they wanted to replace entire cable harness quoting repair for around 6k labor and parts. But i figured that the box itself is the problem. When I popped the hood and pushed the fuse box around or lifted it a bit I could start the car,but with time it got more and more difficult to get it run. So, I got used replacement fuse box ready to be installed. It won't start, and when I turn the ignition on and try to start it, the outside temperature and time gauge reading disappears for as long as I turn the key trying to start the car. The fuse box is the problem,but replacing it seems quite a challenge. Any advise would be appreciated!

[@cmacia06]

+lmullen56 Agreed, I should have left it out. I didn't have enough time to level out sounds when I was editing. Probably not the best choice. Thanks for your input! Ill keep it in mind on my next videos.

[@WISHBONEL7]

Christian Macias What music are you playing ?.

[@dawoodk103]

Hey amigo ! when u went to school did ur teacher play music in the background ? u have good explanatory skills but something is fkd up in ur cavesa.

[@CameronDC-Grimes]

Hey im having a problem finding my battery drain which is 5AMP I narrowed it down to #8 fuse which on my 02 Jeep Grand Cherokee Laredo 4.7L WJ it says on fuse diagram that #8 is: Overhead console, rear wiper, IP lights, rear flipper glass solenoid Thats whats on that circuit apparently a bunch of things. I tried voltage testing the two wires that went to the upper center brake light because it wasn't turning on and found it had a bad bulb that burned out, but i connected both leads to the wires and i popped the fuse, replaced fuse. How should i test voltsge drop on connectors? Or how should i test them to find which components has the short on #8 fuse circuit that dropped amperage draw from 4.9-5V down to 0.36v when I pulled the #8 fuse while having negative terminal cable off the battery post with test leads of multimeter set to 10A and on negative terminal and negative battery post and 0.36v is normal for my vehicle according to manufacturer (they say 0.35v-0.50v is expected with all the modules?) The other thing i should mention is overhead front seat lights that you click on has a problem. The right one for passenger side wont click off if the interior lights dial is on any setting but off. And the left drivers side click on light will turn off? Any ideas on how i can find everything in the circuit and test each component? Also what the hell is iP lights?

[@loloent]

Hello you sound knowledgeable, so I'm going to ask u if finding a short exists with draining ur battery from ur fuse or going threw the harness in witch on my vehicle which is 03 suburban the altinator has a 3 wire plug on top & the brown wire is showing 10.59v with it unplugged from altinator & ignition open & should read 12.2v or higher what could be my problem help please much appreciated?

[@crucisnelson8569]

may i ask what is the setting unit for the multimeter tester

[@StreetDreamzTT]

Great stuff bro. I'm always afraid of electrical lol but I'll give this a shot. Can't leave my car for more than 3-4 days without the battery dropping to 9.xx Volts

[@tpinnock81]

nice vid man. accually the background music kept me interested in what you were saying made the video less boring.

[@Aventuras_en_Moto_Hn]

Good video, thumbs up,, i recommend always put the link where we can buy that devices,,, thanks

[@cmacia06]

Thanks for the suggestion! I've added it to the video description.

[@doshygabbana641]

So was it your Trunk latch or the Dome light?

[@loganpierce6183]

hopefully by now you have fixed your systems wiring there under the hood bro.... somewhat dangerous and unsafe to splice that what is it, 2 g wire to a 6 or 8 with the inline fuse holder. you can get a decent fuse block accepting of that gauge wire for fairly cheap. but, other than that i appreciate the video for sure man, good simple info. helped me out a ton!

[@cmacia06]

+Logan Pierce your the first to notice. Yea, Definitly need to get that fixed. It goes to a power inverter. The fuse holder is the bottleneck for the current. I'm glad the video was helpful!

[@loganpierce6183]

no way, ok well thats a bit more comforting. i for sure thought it went to a secondary amp for some subs in the back. haha, cant believe i was the first to notice that, but I do sound and audio in cars, so naturally i guess. anyways again man thanks for the vid, really helpful

[@BernardBethea6339]

This is the easy part finding the circuit the big test is going through a factory wiring harness to find the shortie would have done the load test from the negative cable pull fuses while watching the amp draw

[@truthsearcherforever3211]

Good video. Short n simple. Can u make a video on how to do a volt drop test on motorcycles. Preferably Japanese sportbike.

[@michaelfortesque]

Your video was very interesting. I have the same trouble with my bike. Seems to me if I remove the positive battery cable and connect the ammeter between the positive post and cable I should read -0- amps. If not then I know I have a short. The fuses are not quite as easy to get to as on a car so it will be a long process to track down where the short is, but with your method I can do it. Thanks for sharing. Music didn't bother me bro.

[@cmacia06]

+MICHAEL BARNES Thanks! I'm glad its helpful. Good luck on your bike!

[@evilphantom457]

If you pull off the negative terminal and do the 20 Amp test between the terminal and the battery post wouldn't it show the total Amp Drain while the car is off? Then you could subtract the .51 amps from whatever the total drawn amperage is and know that you found where the parasitic draw is coming from. I'm not a mechanic but have learned a few things dealing with used cars

[@cmacia06]

+Mike Forsberg Yes! That is another method. It does the same thing but there are 2 reasons why I did not do that. 1. If there is a short circuit, then using the negative of the terminal risk combining all the currents from the electronics in the vehicle and could be well over a multi-meters Max current. This could cause the wires to smolder up. 2. If for some reason a person tries to crank the car and it is in series, the multi-meter well almost definitely get damaged.

[@cmacia06]

+Mike Forsberg Yes! That is another method. It does the same thing but there are 2 reasons why I did not do that. 1. If there is a short circuit, then using the negative of the terminal risk combining all the currents from the electronics in the vehicle and could be well over a multi-meters Max current. This could cause the wires to smolder up. 2. If for some reason a person tries to crank the car and it is in series, the multi-meter well almost definitely get damaged.

[@renaissanceexodus]

Very true. Though to be fair, most things that individually draw high current will be obvious if they are operational (headlights on, an electric motor somewhere constantly running, your little brother sitting in the driver seat turning the ignition switch, ...). The real potential problem is as you stated: that configuration tests total drain, so all the little gremlins can add up to more than the multimeter can handle. It would probably take a very strange and unfortunate series of shorts for that to happen, but you are completely correct that it is possible. And by the way, this is a very good video. Something I haven't seen addressed on KZbin before.

[@jay-nh6et]

Christian Macias ammeter!! lol. good video bro. keep it up

[@cmacia06]

jay 80​ ammeter! I couldn't remember the name for the life of me. Thanks!

[@michellemurphy5994]

Very educational. Could be more specific for beginners. Thank u

[@danlovesvans6244]

I would like to hook up a under hood lamp to my Cadillac Escalade. A TSB (Technical Service Bulliten) from Cadillac says to never connect accessories to the vehicles wiring without using a diode to protect the vehicles electronic components. My question is which type of diode to buy, and how to connect it. I saw many types of diodes available on line but am lost. Please help. Thanks a bunch....

[@healthystyle]

Could you focus on the Multi-meter because I couldnt see the dial settings which is a shame

[@alexntowe529]

I have my abs light and break light on. The dealer told me they need to change to harness and the module. Can i test the abs fuse the same to check that all the wires are working ?

[@robertashley2011]

what type of short would make both fenders hot to the touch when it is running please help if you can thank you.

[@dennisnicholson2466]

I'm a computer electronics guy and I didn't know have that stuff I'm not a car person but I'm dealing with a short and I'm looking forward to trying out the fuse draw with a voltmeter. I started having problems where the car just suddenly is dead when you first get in the car and I recently installed a high-end car stereo and then started seeing problems.

[@BTKKILLER1]

Thx so much. My 2010 mazda 3 2.0 is blowing the fuse when i turn my light switch to the marker lights. I hope i find it with this video

[@mlez7197]

Great video Christian , one question i got a GE multimeter i only see 10A ,200m,20m,2000,200, can i test this on 10A? Thanks in advance i don't want to blow my multimeter fuse

[@cmacia06]

Yes you can use the 10A setting. Unfortunately when trying to diagnose a short circuit, a large amount of current is being consumed. Meaning that it might still blow your fuse in the multimeter. Most multi meters have a 20 amp unfused port.

[@mlez7197]

Thanks for replying Christian i will keep that in mind , keep making videos

[@cmacia06]

Thanks for watching!

[@badfish2184]

nice explanation ,thank you

[@racerboy4]

thanks man...good to know...my brand new battery and alternator won't keep a charge...half a day n dead..

[@tracyalbrighton3019]

Awesome advice.....Big Big thank you 👍👍👍

[@jessicariffle2097]

My 2006 explorer ran great then suddenly has blown 3 new coil packs and blows a fuse every time. What do I need to look for? If it's a ground how do I find it?

[@crystrezerex2life]

what test is good when you have a power to power short?

[@gregdietrich3378]

Good for telling bed time stories

[@cmacia06]

🥺

[@PIANOSTYLE100]

Expy failed going up hill on short out of town trip. replaced fuel filter that was clogged.. ran perfect for 3 days. It failed after errands in a parking lot.. went to get it.. i drove it home.. for 2 days cranked perfect.. continued to run gas out over the next few days so the fuel pump would be easier to change. It failed to start again for five days. Researched . I have Chilton's ECT. There is a limited amount of info in them. I am an ex electronic tech. Understand relays ECT. So watched videos ECT. Checked Schrader valve had gas there. I decided to turn the engine over.. it started (we are dealing with an intermittent here) I took it to a neighbor and he put a bid tool on it.. not a cheap one.. it initially said misfire on cylinder 4.. that made sense because when it quit, it did misfire going up hills I told him to clear the memory.. He found no codes..no cam sensor problems, no crankshaft sensor problems, always has had the sound of prime, never checked voltage at fuel pump relay or pump itself. I hesitate to pup 12 volts to fuel pump willy nilly, as it may feed back and destroy electronic infrastructure. I know this can be the inertia switch (they sometimes are intermittent). It could be an insulation leak to the chassis. I don't know if I am getting spark.. it seems like like the obd tester would catch that.. The problem is that it is intermittent. I notice this doesn't have the normal spark plug wire setup and I think this is cop setup. I am a little confused how to properly check for spark do I use a noid. Oh yes it is only showing about 30 psi on idle and 35 on acceleration maybe a little higher at high rpms. Also my fuse board under the hood and below the steering wheel does allow pull and replace of relays. If it comes down to it I can fix boards, but if it's a expensive chip.. that probably won't be happening.. I suspect we are dealing with an obvious component. If any body can give me a detailed description of how this all works please do so.

[@davidbronson8066]

Very educational. Thank you!

[@CharleneWainright]

I think I have a short circuit in my power window wiring harness. Will this work the same way for that fuse? My windows worked fine, then stopped. If I slammed the driver's side door, they occasionally started working again. I removed my switch at the driver's side door & cleaned it to be sure it was getting good contact, but now I have no power to any of the windows. Kind of sucks as I have an 88 Mustang Convertible, lol. Any advice / info would be great!

[@cmacia06]

Charlene Wainright That is usually a really good sign that the brushes on the motor or worn out. As far as all the windows not working... maybe the plug isn't in all the way... They sell brushes cheap on eBay, but you have to be able to take the motor apart and put it back together. That can be a daunting task for many.

[@cali3007]

great video and the Math!! Very helpful

[@vanessa052384]

20v to test and then 20amp to test and switch the cable to the com?

[@pablozuniga9199]

Technically great troubleshooting and based on Ohms Law.

[@marte1a256]

My 02 f150 tail light fuse keeps burning out when it rains hard. I sealed the housings and made a little hole under each so if water still got in it could exit. No success yet. Any ideas

[@Shawn6strings]

Yo bro I got a fuse that keeps blowing from my AC compressor I changed the compressor out because the AC wasn't working it started working a little bit for a day once I changed it out and then the back was blowing cold air but the front was blowing hot I have a 2003 GMC Yukon now the fuse just keeps blowing I watched your video I'm going to touch the sea is this a short in the compressor or somewhere else I don't know what's going on

[@Shane23Armada]

What would cause for a right turn signal and right low beam on a 2013 armada to flash together. When I turn on right signal and low beam. It flashing together? Any idea?

[@speckspeck]

you say you needed to replace the lamp unit, maybe you fixed the radio short, etc....but what made you say there {from your calculations] is still more that is causing a faster drain than expected, where did that turn out to be and the 64 dollar question is.....why do you have these sudden simultaneous shorted circuits, did they accrue slowly over time and undetected, and why would that happen??

[@romellyarde907]

Keep up the good work

[@haddonassink7841]

This was very informative thank u

[@munequa718]

If the numbers don't go up when you start the car does that mean the alternator isn't charging the battery?

[@erquerichoms4482]

is it important to disconnect battery if yur car will stay long period mayb two to three days idle..disconnecting to reduce battery not loosing charge

[@cmacia06]

+Erque Richoms not as much on modern cars, on modern cars you should disconnect the battery of you plan to leave the car without starting for a couple of weeks.

[@cmacia06]

+Erque Richoms not as much on modern cars, on modern cars you should disconnect the battery of you plan to leave the car without starting for a couple of weeks.

[@mandolka7894]

very explanatory video. thank you :)

[@anguskangus8222]

Great video, thank you.