Rob,
I already installed your headlight relay system, converted from amp to volt gauge, soldered the two wires from the amp meter together and shrunk wrapped them . Now to do this upgrade on my 72 Demon 340 all I have to do is run this wire from the charging stud on the alt. to the Battery side of the starter relay. Is this correct? Do I have to measure the length of the wire I need?
Thanks
Tom