Well if the chassis already has the steering coils in it, then two wires come from each coil and go to the pcb. One wire goes to the corresponding side. There will be a solder point labeled R and one labeled L. A wire from the right coil is soldered to R, and a wire from the left coil is soldered to L. The other wires are soldered to a point on the corner. Sorry, but I can't remember which one. That's about all the help I can give. Oh! I remember one more. A black wire goes from a spot labeled Ground on the pcb to I think the motor mount thingy. Well if you can't figure something out, give me an email at
homeslice30@yahoo.com and I'll take a 3.5 motor or two.