CDI ??? AC OR DC? AND HOW YOU CAN TELL!

[@techman1274]

I couldnt find any info on ac or dc untill your video thank you so much man.

[@anthonya3006]

Great video! Very simple to understand, thank you.

[@drewcecato221]

There are some Vehicles that rectify power from the stator directly to the cdi unit. Thus allowing for a DC cdi that will function with no battery. Regardless will still have fused positive and main switch wires

[@jdscustombuggies1733]

correct, but in the case of the buggies that i have seen as battery voltage drops, the cdi loses function which would be a direct result of a failing rectifier, the way the buggies are wired is the rectifier maintains the battery as the draw happens when it is running. Basically depends on the way it is wired.

[@bogartgonzalez5326]

That's the best video I seen on youtube thank u and keep up the good work.

[@jdscustombuggies1733]

THANK YOU !!!!!!!

[@SamRobbins-t2n]

Finally someone explained it right and understandable. Simple, and quick. No-nonsence talking crap. I liked the post. But one thang though, what does CDI stand for?

[@jdscustombuggies1733]

capacitor discharge ignition

[@dannyrowell3572]

Thanks for the video bro. You made it very simple to understand and I appreciate the knowledge and simplicity of it for sure.

[@garybrady7245]

Hell yeah finally a way to tell for sure. I've been watching a few videos and I kept saying to myself man there's got to be a better way to know for 100% sure. Thanks I just tried mine and it don't have power on the two plug so it's AC correct

[@MrJamesTimmons]

Great video JD. Very useful information for those of us getting into the buggy world. You mentioned at the end you may post a video on the entire wiring harness. For what it’s worth, I believe that would be the most valuable information you could provide. I’ve been having ongoing wiring issues on 3 different buggies and there is not a definitive video anywhere on the web that describes what each component of the electrical system does and what they need to properly function as an interdependent system. I’m a complete novice and electrical is like dark magic to me. Some people are very knowledgeable but are not very skilled at transferring their information. Your videos are easy to follow with the right amount of explanations. You walking us step by step through an AC system and a DC system (Trailmaster Blazer4 perhaps!) would be awesome. I would pay to watch it. Now I’m going to go search for suspected ground gremlins and try to get them to turn over. Thanks for taking the time to make and share these videos. I will be ordering all my parts from you from here on out. (American Landmaster Bulldog Pup x2; Yerfdog Spiderbox, Trailmaster Blazer4)

[@jdscustombuggies1733]

i will work on it

[@jdscustombuggies1733]

and thank you

[@rockyjustus2829]

Wouldn't you say that a AC CDI that makes its juice from the stator and energizes the CDI box would be more appropriate or better off for off-road vehicles just to eliminate one more problem like a dead battery?

[@jdscustombuggies1733]

I will sy that I do not disagree with that theory. I used AC til we started racing them at the tracks and I only switched when I found how much better the Ban Jing performed compared to everything else.

[@glowskulls100]

Greetings from sunny Ceredigion.Thanks for the simple explanation.

[@mmariorr9949]

Right I just bought new engine to my old pit bike and stator is mont to engine cower going in to fly wheel and has only 4 cables going out 2yellow 1 green 1 blue white I need new wiring loom.... many thanks for this video.....

[@JoseManuel-lj4dk]

Great video JD more videos like this really help.

[@eddietrujillo172]

How can i know if my scooter go whit a cdi or dc is my question if u buy it on the street and its and 01 !?

[@eddietrujillo172]

Kymco cobra 50cc !?

[@jesseramcke9825]

Thanks for breaking that down its really important & helpful !!

[@michaelcloud9230]

great vid, so basically on a gy6 scooter, if you disconnect the neg on battery while the engine is running , if you have AC then the motor will not quit?

[@Truthsearcherforever777]

Do u have video on motorcycle CDI n how they work?

[@carlwolf2]

Now I know thanks for the info great as always sir

[@SevanGuitars]

How do I check the CDI before install so I don't install the wrong one?

[@jdscustombuggies1733]

Check the wiring like in the vid to determine what you need and order the correct one.

[@SevanGuitars]

@@jdscustombuggies1733 I know what CDI is required for my Buggy. I need to know if the CDI I have is the correct CDI for the buggy before I use it.

[@chrisstokley7687]

Thx alot! nobody tells were the emergency shut off is ! you did.. thx.. i need that on my bike! ive had the cluych cable break ,and needed kill switch -my new 24$ dc cdi (oem $199) wasnt addded kill switch yet! didnt know which wire was ..so i leave it off. lol. i dont like smell wire frying.. always a bad thing

[@justinhamilton4375]

Very helpful and understandable explanation of how to identify what i have thanks for your help

[@jdscustombuggies1733]

Awesome , thanks for tuning in

[@lilman1796]

Thanks for the video everone, awesome information on the cdi s Keep up the great work everyone ☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆

[@nicfernald1850]

You’re a cool dude and I like your knowledge breakdown. Subscribed I haven’t had a chance to look at my scoot but I’ve been wanting to buy a new CDI box for my Wolf rx50 2016, would you be able to find out online or offhand if you know if it’s a ac or dc variant.

[@BongbongA99]

For me, I think the question is, given the purchase of a non-descript cheap CDI, how do you know which type it is - ac or dc? Also, can you use an ac CDI in a dc machine (and vice versa)? I guess I'm also worried about what any replacement might do for ignition timing - especially for 2 strokes where quick overheating and catastrophic failure could result. It's a minefield don't you think?

[@rohanboswell5408]

Thanks for sharing ,your knowledge,I'm working on a Bombardier Rotax snow mobile ,I'm not sure what it uses it's a got a coil pack that fires 2 spark plugs ,and I had a box on the frame that's transparent,I'm not sure if it's a cdi or a voltage regulator,all I know is it's not sending any spark ,it's got two Mikuni carbs and an oil pump bolted to the pull start housing ,it also has a starter,Thiers no ignition or switch ,any advise will be appreciated

[@jdscustombuggies1733]

i would assume it is AC because it has a pullstart

[@rohanboswell5408]

@@jdscustombuggies1733 yeah I got it started by disconnecting the the harness from the frame

[@Truthsearcherforever777]

I got a 1982 GS650G. I need help finding a igniter or CDI I assume they the samething. Can u help me find one on Dennis Kirk. Suzuki doesn’t make those I think. On my oem service manual it shows that the igniter has 4 wires on one side of igniter (white, B/Y, O/W, B/W) and 2 wires on the other side of igniter (blue, green). Denis Kirk has a lot of CDI I don’t know which fits my bike. Do u know of another website where they got good CDI. PLEASE help me.

[@richardrichard5409]

Brilliant upload my friend, well done😎

[@robertpierce1981]

Well explained. Thank you.

[@afaqueansari2030]

How much voltage an AC CDI recieves from magneto? Also, can I run an AC CDI on 12V 50Hz AC step down transformer for my project??? (I want continuous sparks at the spark plug)

[@SunilSingh-fd1uk]

I need to know if I can use DC cdi to work on double spark plugs wire one coil

[@rampagemototv2023]

dc cdi can use even without a battery as long as your regulator rectifier are goods.

[@fidztshuma1986]

on an Indian Bajaj pulsa, the two separate pins go to the solenoids

[@ljaymaster]

So if my cdi is bad, would it run? Mine runs but doesn't like being warm.. when I push the throttle it falls on it's face.. new carb already and same issue.

[@jdscustombuggies1733]

Sometimes a bad CDI will idle fine but when the gas is pushed it will not advance timing to match the rpms causing it to break up. That sounds like your issue.

[@ljaymaster]

@@jdscustombuggies1733 that was exactly my issue. I just put a performance CDI box on yesterday and it's running great now 😊

[@thedaydreamer7972]

Hi, NIce VIdeo,,,here is my situation, just got a CIXI Konced 150cc scooter, when it came to me it did not start,,,compression, fuel, stator coil all look good, but we have no spark for certain, we tried, different coils, CDI, plugs,,nothing,,,,the previous owner I believe messed with the wiring, and the scooter came with multiple CDIs, I am not sure if this bike is AC or DC CDI and the wiring looks strange, I think this is our holdup to get spark and turn it over, what should I do, put in AC or DC in this bike then case the wiring? TY for you help!

[@roygerson694]

You show a 5 pin DC cdi with leads which was larger than AC cdi you said available online. WHERE?????

[@jdscustombuggies1733]

Gotbuggies.com

[@1983bigfrank]

I jump started my scooter because the key ignition doesn't work even with a new key some electrical I haven't found it yet but the scooter stay running after I take the battery that means I have a AC CDI

[@jrodgers522]

Super helpful! Thanks man!

[@JAMTOAM]

i need to know how to check if lights arr ac or dc powered

[@jdscustombuggies1733]

i would try and test the wires with the machine off ignition on and the light switch on, use a test light. normally ac wired lights get very dim at idle and noticably brighter when the motor is running where as dc wired lights don't fluctuate that much

[@JAMTOAM]

@@jdscustombuggies1733 thank alot

[@alexkenguemboukeu1017]

hi may i need a AC converter to install a DC CDI in my bike?

[@necrobestial]

Now im more confused on witch one should i dry for my gs750 😭

[@jdscustombuggies1733]

My suggestion is what ever one was used before

[@charlesharrell8798]

what if I connect an AC cdi to a DC system or vice versa ?

[@jdscustombuggies1733]

toasts the cdi either way

[@Crumpet_Duster]

If i have a bad stator could I convert the system to DC? Do i have to buy a dc cdi? Or could I use the same cdi just wired differently?

[@Crumpet_Duster]

Nevermind I tried it and I'll be ordering a new CDI 😂😂😂😂 do not do this you will create some fireworks

[@jdscustombuggies1733]

Both

[@DivergentDroid]

I don't have a buggy, I have a Chinese 150cc scooter. I'm watching because I need a better headlight and want LED. I think I need to know if it's ac or dc.- So if you Don't have a tester, just pull your battery connection and the bike still runs, it's AC - if the bike stops.. it's DC - that good enough?

[@jerrybigrig9475]

So if I have a 4 cylinder motorcycle ..(1980 Suzuki GS 850 ).. Will I be able to run only one CDI..or do I need 2 ..1 coil..fires 2 cylinders ..??

[@jdscustombuggies1733]

I suggest you look up the part for that bike , I suspect it has a unit to fire multiple coils or a coil pack

[@DolicasonZaliro-nq5hr]

My scooter have AC startor coil, should I use DC CDI?

[@jdscustombuggies1733]

If your scooter currently uses AC than unless you plan on rewiring it stick with AC

[@briankuss594]

Good stuff, thanks!

[@kennethrand1032]

Please tell me you actually answer to comments I have a Carter XTV -150 with a dc battery electric start a 6-pin CDI and I can't tell because it has a fused 12v but some idiot took the buggy apart and put it back with mismatched parts how can I find the correct ones

[@jdscustombuggies1733]

yes i do try and answer questions but yours is kind of vague. you can feel free to reach me at the shop 941.286.6703 and i will try and answer any questions you have.

[@kennethrand1032]

@@jdscustombuggies1733 thanks I got ahold of a GY6 specialist I'm getting a new harness

[@butterbean4195]

i cant find a 6 wire voltage regulator for my 200cc gy6 11 pole stator.. it has the smaller CDI (AC) on it. new the guy said. i got this kart as a crank no fire. customer says the shop put a new CDI on it and it ran find then one day died while running. just going over the kart it has been abused and the techs sucked that worked on it . its only 2 years old and missing stuff.. bottom line is i cant find a 6 wire 2 plug AC volt reg...anybody know whats going on with this thing? or where to get the part? the regulator has a big crack on the bottom side so guessing it blew..

[@Robertas_Grigas]

What kind of engine is it? Cvt or manual, overhead cam or pushrod??? Also what helps to find parts is the start of the engine code for example "zs177mm"

[@butterbean4195]

i havnt had the side cover off but i was told it is a CVT and the eng# is 161QML@@Robertas_Grigas

[@butterbean4195]

i got it running pretty good now but seems like a small back fire im learning how to tune these carbs but it is very picky and i can shut the adjustment off and it still runs.. not sure if carb is messed up even thou its new.. @@Robertas_Grigas

[@sup3rbird]

That was no help whatsoever, you didn't test the CDI, you tested the wiring. You have two CDI units in your hands; can you test them as they are i.e. on the bench? I have a box of CDIs and I don't know which type they are.

[@paintendaveextremecollisio8057]

Awesome man thanks!👍

[@tugmanxubu4720]

if you dont have battary can dc cdi work? nice work keep it up!

[@jdscustombuggies1733]

my guess(just cuz ive never tried it ) is theoretically you could run it off the dc out put of a rectifier.

[@knoxbom3274]

I noticed that my harness only has 3 wires in the in the bigger slot does that mean I have an ac cdi

[@jdscustombuggies1733]

no, both of those bottom pins on the 4 pin side are grounds. most of the time only one is utilized.

[@knoxbom3274]

@@jdscustombuggies1733 thank you for the help. I bought a new racing ac CDI and it kept blowing a fuse but when I put the oem it won't. Why?

[@jdscustombuggies1733]

@@knoxbom3274 either it's the wrong cdi or something is wrong with it, what machine is it for?

[@knoxbom3274]

@@jdscustombuggies1733 2013 kymco agility 50 4 stroke kg10sa engine code

[@sanelb1147]

People say that if the lower of the two right pins has 12 v while contact is on its a DC. And they also say that if u disconnect the battery and scooter doesn't start then it's a DC as well. What confuses me is the following. I have 12v on my CDI right button wire which tells me it's a DC. Now the confusion comes that my scooter start with kick start even when I disconnect battery

[@tomwarner5331]

Disconnect battery nothing runs lol u need starter motor if no kick start lol

[@NBrogdon45]

He's talking about after it's running already then disconnecting the battery 🤣🤣😂😂! Making perfect since man!!

[@coolhandluke1503]

AC power goes to rectifier and out as DC to battery, but sometime that DC out goes to accessories too and disconnecting the battery wont stop fresh DC power going to accessories and thru power switch

[@matthernandez1737]

On AC CDI headlight does not come on when ignition is turned on headlight will flicker upon idle on AC CDI on a DC CDI when the ignition is turned on the headlight will stay on bright and when the bike runs the headlight will stay bright that is the easiest way to tell AC CDI from DC CDI

[@jdscustombuggies1733]

mostly the case on factory wired AC/DC buggies but not 100%. if it is a used machine or the wiring has been altered that the lights run DC off the battery, this method will still determine what CDI you have.

[@matthernandez1737]

@@jdscustombuggies1733 Very true

[@richardrichard5409]

The headlight being AC has nothing to do with a CDI being AC... If you have no battery, then the CDI must be AC, bar this rule all bets are off😎

[@matthernandez1737]

@@richardrichard5409 you are completely misguided kid. Speaking nonsense.

[@richardrichard5409]

@@matthernandez1737🙄

[@tazgzz8931]

If i try to kick start without the battery on a dc cdi will it still work? No right

[@jdscustombuggies1733]

yes but why? what i mean is it can be wired to work but you still need the battery to run the DC CDI so why skip a solenoid in the mix. not to mention you still need a starter to seal the hole it goes into. but a kickstart can still be used as a backup as long as the power is getting to the CDI it should fire.

[@JerryMclaughlin-i3o]

If my box is DC, can i switch it to AC?

[@jdscustombuggies1733]

kzbin.info/www/bejne/jojMqmCYp8aJZ7c

[@bee2333]

So does stator have to be specific to an ac or dc harness??

[@jdscustombuggies1733]

no

[@pattywaktdiy4175]

This was my question! Thank you. I’ll be visiting your website to get some parts.

[@robertjpilgrimsr5361]

Can you change your cdi from ac to dc cdi or do you have to keep it what it is thanks just wondering

[@jdscustombuggies1733]

kzbin.info/www/bejne/jojMqmCYp8aJZ7c

[@Robertas_Grigas]

My dc cdi scooter runs no problem without the battery

[@jdscustombuggies1733]

Most likely the keyswitch/CDI supply is wired straight to the rectifier

[@protectork9831]

do any of the youtuber mechanics ever heard of multimeter.

[@pattywaktdiy4175]

Yes

[@DustyRandall]

Ac baby

[@wandajames6234]

But there are ac and dc stators... the ac stator has the exciter wire (red and black) and the dc does not. This is a good technical tutorial: kzbin.info/www/bejne/jKC7iq2Ha5aniK8

[@jdscustombuggies1733]

yes there are but it really does not matter. if you have an "AC stator" you can still wire it either way. to go AC use the red/ black AC wire to wire DC do not.

[@chadchadwick3380]

Every body answers the obvious ?

[@protectork9831]

jump to 4:11

[@chadchadwick3380]

No shit how to tell what box you have.not what system your buggies has.

[@jimmyalgiere1291]

Hi My name is Jimmy and I have a 2008 Roketa 250cc scooter and i did have spark but the scooter set outside for 12 years when I bought it so being in Florida a lot got Baked and I decided to change the electrical stator and after that, I can't get any spark it did run when I got it but knowing that I need to change brake systems and other things to make it safer But now I can get spark I did check the 3 yellow wires and they all show a 1 on meter I spent the motor over and with the yellow wires, my test light will show a dim light on all three wires. I'm a retired long distant truck driver who fell off the top semi 12 feet and hit the blacktop at Ftmeyers Airport and been disabled ever since My Ranger blew its engine 8 mo ago and I need this scooter in order to make my appointments at Lake City VA. 23 miles one way I can't afford to buy another vehicle so I need my scooter going. Sorry for talking your ear off. I live way out in the country and have a small scooter hobby But this 250cc AC has me stumped. Can I change this over to DC power with the new stator I put in? So I can get spark> jimmy Algiere my email is [e-mail] 70-year-old man could use some help.

[@jdscustombuggies1733]

250s are DC wired if that helps. You need 12v to the cdi and will have to find a CDI pin out diagram to follow the wires ... which by the way the pin out is the same as a gy6 150.

[@MrJamesTimmons]

Great video JD. Very useful information for those of us getting into the buggy world. You mentioned at the end you may post a video on the entire wiring harness. For what it’s worth, I believe that would be the most valuable information you could provide. I’ve been having ongoing wiring issues on 3 different buggies and there is not a definitive video anywhere on the web that describes what each component of the electrical system does and what they need to properly function as an interdependent system. I’m a complete novice and electrical is like dark magic to me. Some people are very knowledgeable but are not very skilled at transferring their information. Your videos are easy to follow with the right amount of explanations. You walking us step by step through an AC system and a DC system (Trailmaster Blazer4 perhaps!) would be awesome. I would pay to watch it. Now I’m going to go search for suspected ground gremlins and try to get them to turn over. Thanks for taking the time to make and share these videos. I will be ordering all my parts from you from here on out. (American Landmaster Bulldog Pup x2; Yerfdog Spiderbox, Trailmaster Blazer4)

[@jdscustombuggies1733]

i will get something together real soon

[@jdscustombuggies1733]

kzbin.info/www/bejne/injVpohpgdaoqdk