Your Car's Fuse Box Explained: Everything You Need to Know About The Stuff In Fuse Boxes!

[@CarsSimplified]

Can I get an F in the chat for those fuses that were shorted out for slow motion B-roll footage? Also, here are some related videos: Automotive fuses explained: kzbin.info/www/bejne/gaW1foN_rb2DbdE • Automotive relays explained: kzbin.info/www/bejne/qmanhmiubL-tbZY • Are Relay Pliers Worth Buying?: kzbin.info/www/bejne/mWjHaGuPqdyha6c • Automotive Electrical Basics Playlist: kzbin.info/www/bejne/foLIfISrdr12osU

[@spongebobbatteries]

F

[@baldemargonzales5708]

I have a question how many of those components got to be hooked up in order for the car to start how can you make the car start just to start

[@tmac8892]

F

[@crazybonesb]

👍

[@forgiven88]

F

[@Get_cammed_out]

I'm an upcoming technician, and I'm starting my job at Ford this week as a quick lane tech. This channel is really gonna help me reach master mechanic

[@rahmatalicarexperttrainner5229]

You should find tropics on Google every day, what did you face problems in your work, keep update your self day by day

[@iamthemiracle81]

Hows the gig going?

[@mmc2k9999]

Ford Transit-250 sucks fix IT!!!

[@lilrice7865]

How your job going

[@ihategangstalkers3912]

I'm 94 years old... I have been a mechanic for 7 years.. Hoping to get my master mechanic in next 12 years or so

[@matraz10]

Empty spots in a fuse box can also exist for hidden features. Such as for allowing a vehicle to be towed with no power, by allowing the transmission to shift into neutral and etc.

[@TheYellowman2000]

i feel bad for all of the innocent fuses that lost their lives in the making of this video. RIP

[@CarsSimplified]

If this video does well, they will have given their lives so that others may live. RIP

[@bvnseven]

@@CarsSimplified I refuse to make things better...

[@chrise202]

Amazing! You are a great teacher

[@windinthewillow1871]

Dude that was the best video I've ever seen.

[@manofgod8672]

Very well spoken and depicted.keep making videos.👍👍

[@muhash50]

Beautiful. Your this informative video is awesome. Professional and very informative. Fast and clear and solid info. 3 thumbs up. 👍🏼👍🏼👍🏼

[@CarsSimplified]

Thanks!

[@dondeb9191]

Except he makes the same error almost every maker of tutorials commits. He spends 3 or so minutes giving a basic description of what a fuse is and why it is important, presumably under the assumption that many viewers will lack even such basic knowledge. Well and good, but then he immediately afterwards speaks of an ECU under the assumption that the same viewer will know what the term means. How many viewers might we estimate know what an ECU is but do not know the basic concepts behind the value and use of fuses? If anyone guesses anything but zero I would be very interested to hear how they think that situation came to be. But I guess he can't be faulted too badly because everyone seems to do this kind of thing and the whole tutorial itself is considerably better than most automotive how-to vids.

[@AsureyX]

This is more informative on electronics than most videos. I've been struggling to understand what diodes do but here you made it a world more simple.

[@CarsSimplified]

Thanks! That's great to hear. Let me know if there are any other components that you'd like me to cover. I might be able to make a video about it, or I might have one uploaded already!

[@highlife4654]

Great video man first video I ever watch but great information 👍👍

[@rachelechaplin9737]

Thank you for sharing your knowledge :-) you have wonderful skills!

[@davemcguigan218]

Another great informative video on your car's electrical system.

[@CarsSimplified]

Thanks! This one took longer to make than my usual videos.

[@davemcguigan218]

@@CarsSimplified yes I noticed it was a few extra minutes longer than your usual videos.

[@missperfectluxury7630]

@@CarsSimplified i have a question the dash lights stop working all of sudden and they said that they have to remove the instrument cluster for 350$ ? could it be that its just the fuse box and i am only getting scammed ?

[@CarsSimplified]

Well, that's a possibility, but if you don't trust your mechanic, you should probably take your car to another one. Pulling the dashboard apart is a very involved job that mechanics don't want to do if they can avoid it, so if they are indeed going in there, it's not something they would pick in order to put work on the clock.

[@missperfectluxury7630]

@@CarsSimplified that makes sense thank you so much you are right!

[@Trendlaser_]

My main concern is identifying "fusible links." The picture you have of one--I've seen, but how can I tell the difference the blue plastic link and your ordinary plastic crimp joining two wires. I've checked all of my fuses and pertinent relays--all good, but, my power windows and blower motor are still dead. Thanks for showing a picture of it.

[@yangonnerd6669]

F! Absolutely awesome video. Thanks so much, learned heaps.

[@junarila4431]

What is the exact symbol of hazard,brake lights and signal lights and exact volts each fuse

[@fluffinmcpuffin1879]

Like using a lower pound test line on your fishing weight so when you snag you don’t lose your entire rig. 🎣 😜

[@aprilnash613]

I know this is probably a very stupid question, however, im looking to find out why the relays i believe to be interchangeable are not. I have a 98 f150 and I'm trying to get my compressor to come on. Ive done a lot of testing and have more to go BUT i noticed that my manual shows i should have an ACC DELAY RELAY (FULL) and an ACCESSORY DELAY RELAY (FULL) inside under my dash on R4 and R5. Well there are no full relays at all. Before i start taking apart things that are much harder to check on why. I took what i thought to be a full relay from my junction box and when i went to place it in the R5 ACC DELAY RELAY spot its loose. All 3 of the full relays under dash have no visible metal/connectors (not sure how to say that). I was going to head to a junk yard later, but i will have to wait a day or so and would like to work on it in the meantime. You said in the video that it could be from the manufacturer just adding spots or open spots for things later. But the horn relay SHOULD fit into my ACC DELAY RELAY. Am i missing something??

[@ШахрухШарипов-ю2б]

So, do I need to fill this empty spots with appropriate fuses or not?

[@Airbornefighter-hr7lt]

Excellent video and very informative.

[@avj314]

Very well done. Thank you.

[@bearpuf]

Thanks for the very detailed video with superb descriptions. I am still trying to find out what a diagonal line running across certain fuses means on the inside cover of a fuse block under the engine hood. Any elucidation to learning that would be helpful to me.

[@CarsSimplified]

If it's what I can recall from memory, it's a blank/spare fuse/relay location? I'm assuming the spots have no other information and it's just a diagonal line striking through the location where information would otherwise be. Apologies for the late reply! I seemed to have missed a few.

[@bearpuf]

Thanks.

[@idsullymichaels]

Wondering where to find the 'hot' interior fuse - one always on/connected to battery... trying to wire up a dash cam. Pulling each and doing an electric meter is a pain, but seems the only way.

[@linabina2788]

This was amazing, thank you!

[@gloriosatierra]

I need help! One of my fuse connector is messed up: it appears it does not supply ground (or the negative). What do I do? Other fuses and relays are working properly in my engine fuse box when checked with a multimeter; it is just that one fuse connector that is not working. Please help!

[@jasmintordenro7834]

Great video! I have one question - Is a control box and a relay the same thing?

[@melissavaughn8724]

I noticed you mentioned the fuse block at the end. I changed my battery once & alternator twice but when I start my car the voltage drops. Belt appears ok and is tight. Fuses all work under hood but NONE of my fuses work inside my car near my knee at the dash panel. I understand switch has to be on for some to light up but I get nothing at all. I think they have to be related. I keep getting stuck on checking relays bc nobody says the number to use in a manual multimeter

[@didusaysomething235]

I have the same issues

[@olsonlr]

OK How do I wire a brand new circuit into an existing fuse box? Add something new in a blank location?

[@CarsSimplified]

While it's easier to add a new fuse circuit outside the fuse box, what you're asking about is something I am going to do in a future project (that I will of course make a video about). However, to answer your question for the time being, it will depend on what kind of infrastructure is already in the fuse box, but generally you will need to get replacement electrical connectors for that fuse box and install them (how that's done will differ between manufacturers/models/years) with the appropriate wire size leading to and from your new component. Finding the connector that is a direct fit for a given vehicle is probably the hardest part; that's the part I need to look into more.

[@sandeepchatterjee8307]

Why do we use Relay in Fuse Box ? Although we have seperate Relay box

[@danbromberg5909]

Nicely explained! My Miata Infotainment system changes screens without me requesting it to do so. Any suggestions? Thanks, Dan

[@stingk5295]

Passenger side of my C7 corvette is not working , only part of the light . The part near to the edge of the fender.

[@lyianx]

Wish there was a tutorial on how to add a circuit to a fuse box using one of the empty spots instead of using a fuse tap (like i did). But im sure thats far more involved.

[@RokerSMisisipi]

The fuse box in my car is extremely dusty, like you can barely read anything on it. Should I try to clean it and how?

[@kiteinair12]

are there any extra points in the fuse box to which we can connect new stuff like dash cam etc ?

[@thomaswalton9089]

I have a factory subwoofer in 2015 Chevy equinox I am trying to find out what fuse/amp powers that because no sound is coming from it

[@MariaBryant-m3i]

My Dodge caravan minivan dash board went blank what can be , it starts and runs but don't mark anything in the dash board, thank you

[@robertroyles1165]

How do you remove the Jcase fuses example a 40amp fuse

[@kenbugher1590]

2000 ford taurus has no ground to relays.Is there a ground to the engine bay relay box? Thanks.

[@kimberlylester7526]

Hi, i have a question. I have a few dead slots on my fuse box. One of those is for my break lights, and they're not working. I have power to the tail lights, and i believe that bulb shares with the break light. What would i do about fixing that? Thank You

[@naturalability3518]

Thank you sir just been insightful

[@ScientistPrepper]

Thanks for the video. You're cautioning against fuse taps which makes sense. On the Power fuse (often 20A) inside the cab, is that running to anything typically?? Everything has its own fuse even cig lighter so I wonder if the Power 20A fuse is one we can put a tap into? Thanks.

[@ericsmith-sx8xi]

Good video

[@moviesync3131]

starter fuse passenger compartment driver's side if there isn't any will the car start?

[@CarsSimplified]

It depends on what's going on elsewhere, but typically a missing or blown starter fuse will keep it from starting.

[@pppam]

Fusible links are the link type fuse or the latter one is something different? Thanks

[@tuffguy11505]

I have several fuses that don't work when being tested in the slots, however fuses aren't blown. I move those fuses to other locations and they do work, just not in the slots where they belong. When pulled out and inspected, the two silver prongs look burnt. What does this mean? I have a total of eight fuses that do not work and are burnt from pins but still function in other slots. Has anyone seen this before?

[@Giorobot]

There not burnt-out,, they stained that's why you check continuity on the fuse not every fuse it's hot all the time, but most of em are,,it depends on the circuit design ,,for instance on dodge cars the fuse for the horn doesn't have power until you press the horn

[@juliuslomarda1975]

let's say the original amp on my nissan's fuse box is 10amp and that fuse is intended for the room lamp, I changed it to 20amp since there's no 10amp to use, when I tried using the 20amps it did work all lights are functioning. now my question is, will it damge my computer box by using 20amp instead of the original 10amp?

[@CarsSimplified]

Damage to the computer (or other components) could occur, but it also might not (counting on luck for the latter). However, when a short term fix works temporarily, people often forget to complete the fix, so it's best to make sure that gets replaced with a 10 amp fuse again sooner rather than later. Whatever caused the last 10 amp fuse to pop could happen immediately with the next use, or it may not occur again for another year.

[@xtrasauce1799]

I have a beeping noise for icey roads that I want to shut off. Do you know how? I have a 2018 mitsubishi outlander sport

[@user-dk2ot8zq1c]

With key on or car running should I have power to one side of the fuse?

[@CarsSimplified]

In any situation where the fuse is connected in the car, if you can detect power on one side of the fuse and not the other, the fuse is blown. [This does not apply to relays or other components.] If voltage made it all the way to the first side of the fuse, and both sides are connected by the fused element inside, the voltage will continue to the other side.

[@user-dk2ot8zq1c]

@@CarsSimplified I know that. The question is......should one side of the bar have power when the car is running or key on?

[@CarsSimplified]

Ah, key on should provide power to more fuses than just battery power, but some may require additional switches/relays in the on position. Generally I would count on key on to provide power, but if that assumption is wrong, there's a lot of wasted diagnostic time chasing other things. But in most cases, yes, key on and engine running, there should be power at the fuse.

[@milchpulverkakao4917]

What do i do if i need an extra fuse but the manufacturer only put in 1 contact?

[@refilwerefilwe5433]

32v 255 strip fuse can be on Renault Megane 2 original fuse is 32vCAL1

[@alghamdio]

I bought a dash cam and had it installed at a shop. The wires were winded around the metal pieces of a fused and the fuses were connected to the fuse box. I have doubts that this was not supposed to happen. Any advice?

[@cshajur]

Appreciate the video explanation but have one more question: How do I locate the accessory fuse or relay in the fuse box located in the engine bay under the hood. If it doesn't exist what is the best alternate relay circuit can I share my after-market front lower bumper DRL lights with. This is for a 2021 Toyota Corolla LE sedan? I would appreciate your advice on this matter.

[@lunardevil1236]

I would like to know what the relay fuse number for my Ford 150 year 97

[@angimastyk2732]

The fuses in my fuse Box have to match the places of the fuses in my owner's manual?

[@leadweightguy6134]

Great information. Question, I am trying to track down a charging problem. A prime suspect is an ac compressor replaced 6 months ago. The mechanic had some issues with the connector/wiring at that time. When I removed the a/c fuse inside the cab of 06 sportage, I lost all response from auto windows, (they wont operate with that fuse pulled). Is it normal or common for a fuse to control more than what the box diagram indicates ?

[@CarsSimplified]

Thanks, and great question! While it is semi-common, those two components (AC compressor/auto windows) being linked seems a little odd. Components linked together on the same fuse tend to be either related or in close proximity, such as the power accessories/cigarette lighter fuse also providing power to the OBD-2 port. If there is some sort of relationship, like the windows being down disabling the AC automatically, that would make more sense, but I haven't encountered a car that does that. I have limited experience with Hyundai/Kia AC systems, though.

[@leadweightguy6134]

@@CarsSimplified Thanks for the response. I can say that till pulling that fuse, I knew of no relationship to the two functions. I would frequently start the ac up with some or all windows partially down till the ac got really cold on a hot day. Any suggestions for a next step?

[@ChutneyInc.]

I want to add a fuse block to my car in the cleanest way. Without splicing into my ignition solenoid I want it powered by ACC / On position. What should i do? Connect the power wire to the power wire of the origional fuse block to share its acc power source and ground it to the frame? Do u have a video for this?

[@charanckck]

Nice information bro

[@andufuse640]

we make fuse and fuseholder and wireharness for car .

[@richardgreene4725]

Please, What are the smaller " Physically" sized fuses. Although they have the same amperage values as the standard size, blade fuses. My fuse box has both types?

[@CarsSimplified]

There are different sizes with different fuse codes (like ATC or ATS) that do the same job. Why an automaker chooses to have a mix is probably due to the fuse box being designed with the possibility of higher amp fuses that require a larger fuse size, and then they fill some of those larger fuse spots with lower amperage fuses so the smaller size fuse options don't fill up completely, leaving only the large section with empty spots to add new features to later. I don't know if this is the complete reasoning behind it, though.

[@mtsanchez27]

I got a question... I have a 2012 Chevy Traverse wich I replaced the motor mount so I had to disconnect the fuse box located inside of engine compartment passenger I forgot to disconnect the battery cable located inside the car now the car doesnt start, no electrical power at all when I reconnected the possitive cable to the fuse box. I wonder what could go wrong?

[@jaymoney1191]

I would like to electrically disconnect low fluid indicator in my 2011 cadillac srx is there a fuse that can be used or another way to disconnect it ?

[@AngelGutierrez-xk1nh]

How would I test the voltage of my main power distribution box

[@jasonnets4036]

HI my fuse box is all messed up I looked in my manual and all the fuses were all mixed up I feel like there was some kinda custom wiring going on in there because I see some speaker wires how do you know if someone did work and modified or changed any components in the vehicle and maybe it changed the fuses that the correct fuses that were supposed to be there in accordance to the manual?

[@giga2361]

Found snow inside of my fuse box, how can I effectively remove it so it's all dry before I start it? It's practically everywhere in there, almost each fuse! :( 2011 prius 'III'

[@zulayoquendo271]

Can a fuse be blown without seeing that broke?

[@CarsSimplified]

It can; sometimes it can blow out in a corner and it isn't immediately obvious. If you have a multimeter you can check for continuity and/or resistance. Just be aware that although it does happen, it doesn't happen often.

[@MrJasonworkman]

Why do you say the power comes from the red side of the battery when electricity is the flow of electrons which comes from the black side of the battery

[@hellothere6627]

Let’s say I want to add a electronic deceive to the dashboard of the car that is powered by the car that stays in the car, and I don’t want to use the cigars lighter, would the fuse box be the location to attach these devices, or do cars not have this option in them

[@Duelist2106]

I am trying to see the fuse for the phone (bluetooth) in which case it seems to be 13,59 but in each region i can only spot 55, 57, 58 and 11, 14, 16 and 17. Does it mean the diagram is faulty or am I reading it wrong? Apologies if it is a novice question as i am by no means an expert, just merely trying to understand what is wrong.

[@Bk-uz3pk]

Thank you

[@forgiven88]

Thanks 🙏

[@kmdfn]

Hey Mate Great vid. What is a sub fuse for in a Subaru a forester fuse box

[@smokinjoe-ru1vd]

Show me to set up to a 2009 fuel panel box

[@InvincibleJuggernaut]

Great great video

[@goddess_of_beauty6084]

So my horn was honking on its own so I took the fuss out and basically I don’t have a horn at the moment now my radio had been buffering and the next thing u know my car won’t crack cuz it’s not detecting my key fob (push start) can I just go under the hood and reset something or is this a deeper problem…. 2012 Buick Verano 4 door leather please help

[@CarsSimplified]

While I can't diagnose that remotely over the internet, a lot of cars made in the past 20 years have the horn as an important part of the security system. If it gets disconnected, the vehicle might think it is getting stolen, and lock itself (and components like the radio) down to prevent that from happening. If the horn was honking like an alarm (on and off repeatedly in a steady pattern) it may either have a security system fault or it actually detected a break-in. If it was just horn on and no off time, or random busts of horn, there may be a short in the horn wiring. It could even be as simple as a horn relay that is stuck in the on position! Hopefully it's something easy like that. Let me know how it goes or if you have any questions, and I'll help if I am able to.

[@goddess_of_beauty6084]

@@CarsSimplified yesss it’s working now it said attempted theft!

[@CarsSimplified]

That's great to hear! (Assuming nothing was damaged/stolen.)

[@goddess_of_beauty6084]

@@CarsSimplified yeah no prob was attempted but everything’s good 👍🏾

[@sooryanathprabakaran7762]

Hi, After i tried to connect the fuse tap for my dash camera, the fuse port where i tapped is not working anymore. I tried to remove the fuse to check the voltage in it, it outputs 0v, can you please help me here? Suzuki SCross, india.

[@starlightmiach7127]

Can someone please tell me what the B/U i.e. backup (in the fuse box) function is ?

[@Charles-in3zt]

How do you test the square flush mounted fuses that are the higher amp generally? Like the 20 or more amps. Do they have metal slots on the top like the smaller amp fuses do that allow a circuit tester to see if their good?

[@crazybonesb]

Tysm👍

[@dbdan61]

Ugh. I keep blowing my interior lights on the GTO when I slam my door. I keep a few spares to swap.

[@CarsSimplified]

That sounds frustrating; is it something where you know how to fix it but it's a pain to do so?

[@dbdan61]

@@CarsSimplified it's just being lazy and not wanting to remove the door panel. Ill do it soon... Haha

[@CarsSimplified]

Been there before. There now, actually, and the thing I need to take off is already!

[@mikeb6902]

how hard is it to remove i believe they call it a J case fuse? at 9:49 theres a bunch of pink 30, blue 20, etc, do they just pull out, I have one Id like to change on my car i can pull it out slightly but doesnt go any further. Thank you

[@miropokuta5887]

Am nedd help am change fuse box bat still not start what am nedd

[@TehDavieRawrs]

Does an interior light fuse only have power running through when the door is open or is it always live?

[@juliuslomarda1975]

there is a switch. when you open the doors lights should be lit.

[@JeffWithTheCleft]

So itd be safe if the fuse im switching is a 30a originally and i put two 15a fuses?

[@CarsSimplified]

I've never seen anyone put two fuses in parallel to add them together like that, but in theory, that's what would happen. You'd also be working with the imperfections of both fuses, so the slight above or below 15A on both could end up being more varied than just one 30A. I have never seen it done and wouldn't recommend doing it.

[@xaviel904]

Can i go from a 7.5 AR to 10?

[@wak359]

If you want to provide yourself a potential car-be-que

[@memekomandante9ruiz415]

This guy sounds like Ben Afflek 😂

[@jonathanabeles3772]

How many fuse boxes does a car have?

[@904Saleen]

Some have only 1, some like my G37 have 3. I’m sure there are cars with more as well. Most cars have 2 though. One under the dash and one under the hood

[@La_abbess]

Man I can’t get that cover open. What sorcery is this🥺

[@WestCoastUSA546]

There are 4 things on two sides you need to push while opening the cover. At least in my Honda..

[@dokesz530]

Too complicated. If m modifying only my lights if my bike just take out one fuse and no need to disconnect the battery.Simple but cars omg this is too much. It seems everything running dc.

Jeep

[@ALLin-one1]

I like it and I love it very vivid great guy keep up and I invited u to islam

[@giannilopez549]

Am I the only one that’s having trouble understanding this .

[@alandaters8547]

Nice video, but I would have added a section on the different fuse types, as they can be confusing, especially if ordered online. (The PAL line, MCASE vs JCASE, mini, low profile mini, micro2, etc.)

[@wandanance9324]

Question, without the relay in the fuse box I am get 12v in 87 with the key on and nothing on 30 is that correct?

[@Loveravalanche]

If im to replace one , how do i know how to buy the right power so i dont buy a fuse that's higher power than the original, im missing the no.15 (A blue one ) in my chevy impala 2015

[@Loveravalanche]

In the manual it says airbag/sdm , is is a 12 voltage or 15 ?

[@CarsSimplified]

The voltage is going to be the same 12 volts for all fuses (with exceptions for hybrid/electric cars) but the correct amperage should be listed in the fuse box (there is often a chart sticker or in the mold of the plastic) and/or owner's manual.

[@drm9979]

This is a tremendous teaching video, which I will be re-watching and re-watching until I thoroughly understand. I see one of those awesome 04-06 GTOs in some of the shots. My question is this: I want to give my two after market gauges in my 2006 GTO their own power source tied to the ignition, so they only turn on at engine start. Right now I believe the shop wired them with the car audio which is on a switch, I think to the cigarette lighter in console. Thus when I turn the audio on with engine off, the gauges also turn on, which I do not like. So one person suggested add-a-fuse. Your video convinced me, no way. Another suggested I buy a spare fuse block and harvest a terminal from it, this idea I like very much (and your video discusses it). Do you agree? Would both gauges be able to work from a single added terminal? How do I do it? Any videos on this subject especially in a GTO? Needless to say, if you are anywhere near Phoenix AZ, I would gladly drive there and pay you well to do this.

[@trinalowe3888]

When you plug a relay in the fuse box does it go a certain way? Can you plug it in wrong?@carssimplified

[@CarsSimplified]

I'm sure there are some out there that can be plugged in wrong and prevent me from being able to say they're all going to only fit in correctly, but most of them are either designed to only be plugged in one way, or has circuitry that forms an "X" pattern, (some four pin relays) so it can be plugged in two ways, but both directions work.

[@ryanrigali1128]

My car usb outlet still has power for awhile after i turn the car off. I want to change it so the usb outlet has no power when the car is off. Should or can i move the 15A fuse for "accessory sockets" to a different empty 15A fuse socket?

[@802Garage]

Very thorough! So it should really be called a fuse, relay, transistor, and diode box! :P

[@CarsSimplified]

Rolls right off the tongue! Hopefully there are enough electrons in the sulfuric acid and lead box to power them all!

[@milinda2569]

No fuses were harmed in this video

[@Triumphant144]

In English please lol but I get it though. Thanks

[@shauncanuto7380]

Hey I’ve got a question? Is it safe to keep a fuse out of its position and have it essentially “turned off”. I’m mainly referencing to my power antennas fuse that I’ve removed because it’s motor is stuck in a constant motion.

[@CarsSimplified]

As long as it for sure doesn't control anything else that you want to keep available, then yes. Sometimes that's a method mechanics use to diagnose an issue. I can't imagine any vital stuff tied to the power antenna circuit but it's always worth checking.