Lifan 125, full wave stator/s wiring

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Sambo

New Member
I have thrown a Lifan 125 into my C100 restomod. Runs around just fine. I'm now trying to get some lighting going. I purchased a half wave rectifier from the engine supplier, assuming it'd give some good output, but with no joy. After contacting the engine supplier, they've said its a full wave, floating ground engine. I now have a 4 wire full wave rectifier. I'd like to run full lighting, with a battery. I'm a bit confused after a lot of searching for answers. Can I simply run the reg/rec outputs to a lead acid battery, then run all lighting off the battery? I've dummy run the rectifier and am getting around 6 volts across the positive and ground at idle, then it drops away to nothing when revving. Seems a bit weird to me, but I know very little. I've read up and may need the battery in the system.
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MiniBike Mike’s Garage

MiniBike Mike’s Garage

Active Member
What colors lighting/charging wires are coming from stator? If there is a pink wire, I’ve never had any luck with those. Whenever I run across and engine that has pink and yellow stator wires, I immediately spend the $17 on Amazon and pick up a new stator with white and yellow wires. Those have worked for me every time. I seldom run a battery and have decent lighting.
 
S

Sambo

New Member
MiniBike Mike’s Garage said:
What colors lighting/charging wires are coming from stator? If there is a pink wire, I’ve never had any luck with those. Whenever I run across and engine that has pink and yellow stator wires, I immediately spend the $17 on Amazon and pick up a new stator with white and yellow wires. Those have worked for me every time. I seldom run a battery and have decent lighting.
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Thanks a heap Mike,
Yes the engine has a pink & a yellow stator wire. Testing shows ungrounded. Sounds like I might have to bite the bullet and go for a new stator and a little wrenching. Appreciate your videos and input
 
J

jgcoutts

New Member
Sambo said:
I have thrown a Lifan 125 into my C100 restomod. Runs around just fine. I'm now trying to get some lighting going. I purchased a half wave rectifier from the engine supplier, assuming it'd give some good output, but with no joy. After contacting the engine supplier, they've said its a full wave, floating ground engine. I now have a 4 wire full wave rectifier. I'd like to run full lighting, with a battery. I'm a bit confused after a lot of searching for answers. Can I simply run the reg/rec outputs to a lead acid battery, then run all lighting off the battery? I've dummy run the rectifier and am getting around 6 volts across the positive and ground at idle, then it drops away to nothing when revving. Seems a bit weird to me, but I know very little. I've read up and may need the battery in the system.View attachment 79454
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I’ve understood that running with the stock Honda engines, the battery is necessary as a voltage regulator of the DC output of the half wave rectifier as it by its nature can only pass through 6 plus DC volts. The headlights, speedo light and taillight operate on un-rectified AC while the brake light, horn and in my case the winkers all run off the regulated DC.

Without the battery in place you may find you frequently burn out headlights.

You say you’d like run full lighting I recently had an issue with my battery draining after sitting for a couple weeks and ran a test without the battery in place and burnt out the taillight, speedo light and warning lights.

For what it’s worth F rom this I think somehow the battery in place limits the AC output as well, so think it is necessary to have a properly functioning and reliable lighting system.
 
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