A resistor is available for this use and they get very hot. It is recommended you mount it inside the heater housing where the fan blows on it.

I use a VR-4 voltage reducer for my 6V wiper motor. They are also for use with heater motors.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.