Lifan wiring - Trail Buddy TB422 harness

If you are using turn signals on your Lifan powered build, the TB422 harness from Trail Buddy is a popular option. In this video, we go from opening the package to putting the harness on a bike and explain the wiring functions along the way.

[@mikeb6431]

Awesome video Mike! I don’t think anyone could have explained it any better. Doesn’t seem as intimidating as it’s always been to me. I nominate this for video of the year! Exactly what I was hoping for, only better!

[@MiniBikeMike]

Thanks Mike!

[@davidkobelka7219]

Wow. This made life easy. Thanks again Mike.

[@Mr10usdad]

Perfect timing! My YX 140cc engine and my Trail Buddy harness are in the mail. Thanks for sharing this information. I told Ron at Trail Buddy what I needed and he made me a custom wiring harness. I think I only paid $15 extra.

[@my50bike]

Thanks for the video that really helped me. I was not sure why there were two sides to the red battery wire but knowing its for a starter now makes sense.

[@suchman38]

I would really love a 1 on 1 wiring class for my bike it’s somewhat similar

[@MiniBikeMike]

👍🏻

[@larrystancombejr9590]

So I thought I heard that you live in Indiana? I'm in Bloomington and if so that's awesome. I've watched a lot of wiring videos but you by far take the time and don't rush thru it and I'm new to this stuff and it's greatly appreciated. So keep the videos coming because you know your stuff and it's not a stressful thing to wire a bike up when you have a good coach. Keep 2 wheels down Mike.

[@MiniBikeMike]

Thanks! I’m just north of you, in Martinsville.

[@geoffreyjones2000]

Thank you, sir ... Happy spring time :) bring us along for the gmc swap

[@MiniBikeMike]

I’ve got the GMC on my schedule for mid-May. 👍🏻

[@saltyshellback]

Thanks for this video. I was able to rewire my friend's SS50 with your help ;-)

[@claytonkirby878]

I had the cool toys in the 70s ..i wanna build up an old 78 atc 110

[@yokomzare201]

Good job explaining. Great videos.

[@frankm2347]

Great Video ! Explained very well

[@MiniBikeMike]

Thanks!

[@marcogazzola1316]

Great video !! 👍🏼

[@MiniBikeMike]

Thanks!

[@thelagmeister]

I laughed when you said you didn't have the tank. I would have fired mine up today if I had my tank.

[@randyterlecki6330]

Thank I’m ready to start mine

[@MiniBikeMike]

👍🏻

[@JoeDontaskme]

Hey there, thank you so much for going through this seriously. Just wondering where does the brown get its power?

[@MiniBikeMike]

@@JoeDontaskme It’s tied in with the black wires.

[@schroederbuilt]

Great video thanks for sharing

[@MiniBikeMike]

Thanks for watching!

[@historicalfootprints9642]

I am re-watching because I’m using a Lifan-125 engine in my ct70. Other than the bulbs in headlight & taillight (no turning signals) do I need to put new ends on taillight/headlight pigtails to fit on the trail buddy harness for 12 volt? Will the stock 6v horn still work and will I need to change the end to plug into the harness? And what about the rectifier do i need a 12 volt rectifier? Thanks so much for your wealth of knowledge on these it’s been very helpful.

[@MiniBikeMike]

The taillight wires should have the correct wire ends. The headlight should be plug n play also, but depending on the switch you’re using, there may be a wire or two that will need the ends changed. The 6v horn works great with 12v, keep it. It should plug directly in. You will need a 12v regulator.

[@devonm7868]

Hi Mike, i went to replace the battery in my son's 1991 Honda CT70 and found a huge mouse nest underneath. I am trying to clean it out and in the process found 2 wires that were broken off from who knows where. One is green with a yellow stripe and the other is black they are taped together. Would you know where they come from? TY

[@MiniBikeMike]

@@devonm7868 Sounds like they are the foot brake switch, for lighting the brake light. Black is 12v power into the switch and green/yellow is the power leaving the switch to the light.

[@cainbeeping8480]

Nice

[@Ken-it8wv]

Do I use a full wave regulator or half wave . 125cc ssr motor. Thanks

[@MiniBikeMike]

If your engine has one white and one yellow, it should be a half wave engine.

[@dannymotovlogs4254]

@@MiniBikeMike does this mean you would need a half wave regulator/rectifier than?

[@MiniBikeMike]

@@dannymotovlogs4254 yes

[@saeedkhan7999]

I bought 110cc lifan engine frontspraketis15 t what number to go with the back buy 36t no fiting help me please

[@MiniBikeMike]

I typically run a 17t on the engine. Make sure you get one for a 420 chain and the correct spline shaft….17mm or 20mm.

[@airwreckfpv8009]

I have a lifan 125cc with a yellow and pink wire coming from the stator. I'm assuming the yellow is for the lights and pink is for the battery. The problem I'm having is the headlight doesn't light up at idle, but comes on when I rev the engine.

[@MiniBikeMike]

I’ve given up on the stators with a pink wire. For $15, you can pick up a new stator on Amazon with the yellow and white wires. $15 is cheap to have all your troubles disappear.

[@airwreckfpv8009]

@@MiniBikeMike ok sounds like a plan. Yeah I've tried everything. Do you recommend going with the same style 6 coil just one without the pink wire or go with a 2 coil like the ones in the original Honda motor?

[@MiniBikeMike]

@@airwreckfpv8009 I prefer the 2 coil version.

[@airwreckfpv8009]

@@MiniBikeMike thanks for the help

[@davidkobelka7219]

I ran into an issue that I’m unsure of. Instead of a yellow and white wire from the engine mine came with 2 yellows. Would it matter which one went to white?

[@MiniBikeMike]

If you’re looking at the regulator plug and the red wire goes to top left. Connect the white wire to whichever yellow is below the red wire, in the bottom left spot.

[@davidkobelka7219]

@@MiniBikeMike Hi. The harness end is all good. White wire coming out below the red wire and out down the line with the wires that I need to plug into the engine wiring. The engine wiring itself is where I have 2 yellow wires instead of a white and a yellow.

[@MiniBikeMike]

@@davidkobelka7219 I’m not a fan of the stators with two yellows. You can try plugging a yellow into each of the yellow and white of the harness. Start the bike and measure voltage at the battery. If it’s above 13v, you’re good to go. Most of the time, with two yellows, it goes like this: Pick one of the yellows, doesn’t matter which one, and connect it to ground. Take the other yellow and connect it to both the yellow and the white in the harness. Hopefully, this will work for you.

[@davidkobelka7219]

@@MiniBikeMike Hi. Ok thanks for the info. It’s sure funny with these engines how every one is a whole new ballgame. I ordered the same one as you. Mine came missing the cdi and with 2 yellow wires lol. I’ll try both your suggestions thanks. In the meantime I’ve ordered a cdi and a new stator I’ll see what I get. Thanks again for taking the time to answer. Have a great day

[@Buttbutt2000]

What is the brown with the white wire for?

[@MiniBikeMike]

Some headlights have a small running light within them. That wire is for the running light.

[@owenmackinder6374]

Where do I buy this harness

[@MiniBikeMike]

Trail Buddy mytrailbuddy.com Part# TB422

[@serg_g7]

i dont have a key switch i only have a kill switch, i pluged the kill switch to the kill switch wires in front i pluged i think everything good and when i start the bike only headlight is working and nothing works. i little confused its becouse i dont have keyswitch ?

[@MiniBikeMike]

The harness has a white plug with 4 wires (red, black, green & black/white). This is where a key switch would plug in. If you’re not using a switch, you somehow need to connect the red wire and the black wire in that 4 wire plug.

[@serg_g7]

@@MiniBikeMike in my harness i dont have plug but in the front i see red black/white and then black and green

[@MiniBikeMike]

@@serg_g7 oh, I thought you were using the harness I’m using in the video. If not, I don’t have a clue without seeing the entire harness you have.

[@serg_g7]

@@MiniBikeMike no but wires colours same and i pluged everything and now everything working i watch this video 5 times and i learn from 0 to what u say in this video big thank for you

[@thetranfamily3910]

Hi Mike. If I measure ac voltage from white and yellow wires. How much I should expect when the engine runs

[@billlester3088]

So Mike, aside from the harness also needed is 12v Coil, flasher ,DC CDI, regulator, lite bulbs... but is their a work around using the existing 6v wiring system with the Lifan 125 engine??Thanks

[@MiniBikeMike]

Bill, you’ll get a coil and CDI when you purchase a Lifan engine, those parts are part of the kit. You will need to purchase a regulator, if you’re running lights. Same with flasher, if you’re running signals. I’m sure there is a way to use the original harness, but I’ve never attempted to use one. In my mind, the amount of time it would take to rework the original harness with wiring ends that will plug into the Lifan engine and it’s parts.......it’s just way easier and quicker to install a new harness that is designed to go with the engine.

[@billlester3088]

@@MiniBikeMike Mike I purchased 72 CT70 with installed Lifan 125cc and is still 6v , don't have a clue as to wiring but it seems to run ok but throttle cable to long, do you recall the length on your blue CT 70. Thanks very much for your assistance

[@MiniBikeMike]

@@billlester3088 The Lifan is a 12v engine. If your bulbs are 6v, they must have a step down regulator in the system or all the bulbs would blow.....like I blew the headlight on the blue bike. I use a throttle cable with a 36” cable length. I think the outer sheath is 32”. Twist Throttle and 36" Cable Handle Grip Kill Switch Set for 7/8" 22mm Handlebar 49cc 66cc 80cc Engine Motorized Bicycle Push Bike www.amazon.com/dp/B08MFGPZHP/ref=cm_sw_r_cp_api_glt_fabc_248Q3QKW28V807Z29M05?_encoding=UTF8&psc=1

[@billlester3088]

@@MiniBikeMike once again Mike you have come through, I am very appreciative, keep the video's coming and grow the channel

[@rowesniper1]

could you send me a copy of page for the wires. hell i got same set up but i lost the dang paper

[@ricardovd977]

hey, Your video confirms to me that I connected everything correctly. But I see what I did wrong that still leaves me with no spark. And that's the kill switch connector. Can you tell me where you connected that wire from the kill switch connector to? Because I can't figure it out.

[@MiniBikeMike]

I didn’t use the kill switch wires, because I’m using the key switch to shut down the engine. You can leave the kill wires unplugged.

[@ricardovd977]

@@MiniBikeMike i mean what you are talking about at 24:05 does this have to be wired to get a spark? and what should it be connected to? i also have an ignition switch to turn off the engine but i plugged everything in but still no spark

[@MiniBikeMike]

@@ricardovd977 I had forgotten that the bike in my video had a separate kill switch. No, you do not have to use these wires. You should get spark, even if they are left unplugged.

[@ricardovd977]

@@MiniBikeMike Can I send you a message or an email? I clearly need help with my problem.

[@MiniBikeMike]

@@ricardovd977 email is: [e-mail]

[@ninja-lp4uo]

For 6 volts? Please

[@MiniBikeMike]

Lifan engines are 12v.

[@GeorgePetritis]

Same process for the piranha yx 140?

[@MiniBikeMike]

The YX engines have a different type of charging stator. I believe you take one of the yellows from the engine and send it to ground. The other yellow is tied together with both the yellow and white wires in this harness.

[@GeorgePetritis]

@@MiniBikeMike thank you so much, I got everything ordered and can't wait to do it!Amazing video!

[@EduardoHernandez-mq8fm]

Does this work on a Lifan 200

[@MiniBikeMike]

Unfortunately, I’ve never used one of those engines, so I’m not sure.

[@johnengland8619]

It looks like a big mess, until it gets broken down wire by wire

[@lloydlacross1358]

question at 31:20 the gray wire . is that keyed hot or constant hot ? or did i miss something ? you lit a fire under my ass to get this long project done. 👍

[@saeedkhan7999]

Hi sir