I have 1955 Model B I had to rewire. I made a new hire harness; and used ( Sparex) light switch. I had a wiring diagram for the tractor, but the light is different. I had to guess. I ran the wire for the terminal at the end of the fuse on light switch to discharge side to the ammeber, the terminal on the side of switch to the headlights bottom terminal to the field side of generator, I got 2amps. When tractor is running slow when I pull switch out increase amp it does nothing it stays on2 amps. When all the way for lights they burn, but I have 20amp discharge.
PLEASE HELP IF YOU WHAT IT IS.
PLEASE HELP IF YOU WHAT IT IS.