Not sure who makes a harness but I am not sure why you would need one. Here is the set up
heavy red = 12v batt
- heavy black = good ground source
- white is your trigger if using points
- orange = goes to the + side of your coil
- black = goes to the negatine side of your coil
- small red = switched 12v , basically ignition (has to have power in both run and while cranking)
- green and Violet wires= go to your distributor magnetic pickup, green to black(m-) and violet to orange(m+)
