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Lifan 125cc Semiauto Wiring - Guidance Needed

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17K views 21 replies 4 participants last post by  jrbbikerx  
J
#1 · (Edited)
hello.

i am having difficulty wiring my Motoped.

i have the 125cc Lifan Semiauto.

so what's confusing me is:
1. The Coil I have only has on terminal on it, instead of a hot and ground that all others seem to have and that the Motoped instructions guide to. What do I do in the absence of the second terminal for the ground? Ground to frame by jolting coil pack directly to it?

2. There are 2 solid green wires coming from engine buy only one wire that it can be hooked to? Ie two green wires with female ends but only one with a male on the wiring harness. Which one do I choose?

thanks
JRB
 
#4 ·
The coil needs a hot and a ground
your coil gets its ground from the mounting bolt

you may have a green coming from a neutral indicator , that wont be needed

TECH
LINK:
TBolt USA Tech Database - TBolt USA, LLC
 
J
#8 ·
thank you for this!

but the issue is that my harness has two green leads and a black/white lead. the issue is how do i determine which plug into eachother?

it seems like there is going to be one wire from both the harness and engine unused. if you see in the picture, 4 of the 6 ends are female.

there are only 2 male ends that need to be connected to something and i am trying to determine to what they are connected

T Bolt USA said:
The coil needs a hot and a ground
your coil gets its ground from the mounting bolt

you may have a green coming from a neutral indicator , that wont be needed

TECH
LINK:
TBolt USA Tech Database - TBolt USA, LLC
Click to expand...
 
J
#6 ·
added some photos.

can someone guide me as to which wires unaccounted for connect to eachother?

also, does the coil 100% need to be bolted metal to metal to the frame to be grounded since there is no grounding wire lead terminal on it? it seems like there is only a hot lead.

THANK YOU
 
#9 ·
The green/red is the neutral indicator (don't need)

The coil needs to be bolted to the frame to get its ground

Often wire harnesses have multiple grounds , these connect together in the harness so its basically the same wire
 
J
#12 ·
So looking at it again I just realized there is a black and white wire in the bundle too.

The engine harness has:
1. Solid Green with male connector
2. Green with red stripe male connector
3. Solid yellow with female connector
4. Solid white with female connector

The ECU harness has:
1. Solid green female connector
2. Solid green female connector
3. White with black stripe female connector

can someone please just tell me which goes to which?

I know the male solid green and the female solid green need to be connected 100%.

foes the green with red stripe male connector go into the solid green with female connector or white with black stripe female connector?

thank you!
 
#15 ·
Plug the matching solid green wires together, I'm thinking the extra solid green wire and the black/white tracer wire would be used if you had an ignition key, I would consider them extra, as well. Especially since you already have a kill switch plugged. The wiring harness itself may be universal, with applications for a variety of other bikes, and you would have wires left over.
 
J
#19 ·
ok thank you everyone.

also, are Lifan 125cc wire harness interchangeable?

i have two motors for the motoped, the semi and the manual.

The manual wiring harness is much less complicated and will lend itself to a cleaner install.

are all of the electrical parts on Lifan engines of the same engine size (cc wise) interchangeable?

Thanks
 
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