On my 49 I have two wires. One from the ignition switch to the heater switch and then to the fan motor. The other wire is a ground which is attached to the heater shell. I put an in-line fuse between the ignition switch and the heater switch. The heater switch is basically a rheostat which varies the fan speed.


1949 Chevy 1/2-Ton
"Sedgewick"
In the Gallery
1989 Caprice