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Custom Tandem Sub Harness for Conversion

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Price: $40.00
Manufacturer: Trail Buddy Inc.
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⚠ California Prop 65 ⚠

Product Options

Motor Brand:
Conversion aftermarket engine connection sub harness with electric start option (if you do not have electric start just tape off the connection ring or clip this wire to remove it). 
This sub harness is fused to protect your original wiring system and designed to use with your original OEM Harness and Ignition only. See detailed connections to engine components 
and OEM harness and special note for model years 1976 - 1979 not using the Selenium Rectifier in picture of the harness.  This will NOT work on a CT70 1980 or newer model year.

For the 1976-1979 years you will need the 12v flasher relay and bulbs for your build.

Flasher relay:

Below is a list with links to other parts you may need to order for typical YX/Lifan engine12 volt conversion. If you want to keep your system 6 volt with your 
aftermarket 12v engine then you just need to order this voltage regulator to replace the 12v regulator that should have been supplied with

If you did not purchase your engine from us, other lifans should work, but its not guaranteed. For this harness in particular, the connections going to the motor will be:
Blue/White wire: Pulse
Yellow: Lights out
Green/Red: Neutral light
Green: Ground
Black/Red: Kill switch
White: AC out

Electric Start Button (Generic)

Tail Light

Fuel Shut off Switch

Special Tandem Sub Harness to tie directly into your original harness - $30.00 -$35.00 depending on your engine type:

For a Lifan Engine Use Harness Part #TB421  -----  Lifan 125cc Motor:

For a YX  or Zongshen Engine Use Harness Part #TB420-----Engine
If you are installing a Zongshen or YX with the 2 Yellow wires coming out of the stator

See picture for detailed connections to your OEM electrical system.

Typing Paragraphs in HTML ⚠ California Prop 65 ⚠ WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to