headlight/brake light question

R

Rick_CT70K1

New Member
Well I have been fortunate to not hit too many snags on my K1 rebuild. It has the Lifan 70cc motor and also the 12volt back to 6 volt converter harness. Hindsight I would have just converted to 12volt but that ship has sailed.

Now to my issue, the headlight switch when it is on L position no light is on, but when I put to H it shines brightly and the tail light comes on. When I use my brake the brake light does not light up.

I haven't gotten around to troubleshooting either yet, but figured I'd post in case anyone had any good ideas for what I'm doing wrong or what may be wired wrong.

When the bike is operating/engine running the headlight isn't on nor the taillight unless i turn to High beam switch.

I'd attach a pic with the light on but thats further back in the build so here's a semi completed picture, crooked sticker and all ;)

https://drive.google.com/file/d/1eoGNLGjDP9-R3p2iMfCOFT_p1r6aJmb8/view?usp=sharing

Thanks,
Rick
 
6

69ST

Well-Known Member
There are 3 HL leads: low beam, high beam & ground. Your dimmer switch should be fed by the yellow AC lead, if Lifan used the same color coding as Honda. It's also possible that you have a wire harness/keyswitch mismatch...like a K0 harness with a K1 keyswitch, for example. These are nothing more than blind guesses. You've made a lot of alterations and we've seen no details, yet. I'd strongly recommend working from an OEM wiring schematic for your bike, a Lifan schematic for the engine and one that covers your voltage down-conversion mods. Short of that, it's going to take details shots and some educated guesses/trial & error.
 
ctbale

ctbale

Member
Did you ever figure out your wiring? Like racerx said, need to marry the two Wiring Diagrams together.

Si I am curious, how does that 70cc lifan run? How does it shift? I put a 125cc lifan in a fram I had no engine for, works ok. Tranny shifts kinda clunky, but not too bad for $275 delivered with a carb, shifter, kicker. Havent blown it up yet, been 5 years and maybe 50 hrs.

Like how yours turned out, like how the airfilter matches the rest of the bike.
 
R

Rick_CT70K1

New Member
My brake light works very faintly and tail light is working properly, I am hoping adjusting the switch that goes down by the brake pedal along with the brake cables gets that signal a little stronger. As to my headlight, the low beam still is not working so I'm going to fiddle with the wires a bit and see what my issue may be. There is a White, Blue, and Green wire. I know the green is the ground, I am assuming the blue is the high beam wire since it also goes to the high beam indicator light on the speedo, so I need to see if i have the white wire hooked up properly it seems like. I am also curious if the low beam filament could be burnt out but not the high beam (could be an ignorant rhetorical as I don't know much about light bulbs if that is possible or not). Also, my neutral light indicator and general lighting isn't working on my speedo so might have to see if that is a bulb or wiring issue. Not sure if the speedo originally had a light that worked in it or not.

The lifan 70 cc works pretty well. I have some carb tuning to do but as to just the motor, it fires up easily, motor seems pretty tight and overall seems to be well put together. It shifts ok/semi hard which i hope loosens up after a bit of use. Hard to find neutral but otherwise it goes in and out of gears without issues. Thanks for the compliment, here is a new pic with the skid plate and spark plug guard installed.

https://drive.google.com/file/d/18C3t9BZ84yHs9z4t-lyg7umt2CqwjQyY/view?usp=sharing
 
Last edited:
Top Bottom