Shoptalkforums.com

Hello,

Its that time of year again. I have a 1972 rat rod bay thats been fun in the summer but now I am setting up the heater system for winter.

I hooked up just about everything in the engine compartment but i can not get the blower fan to work. where dose it get its power and or sigle from ? I looked under the dash and I see NO wires conected to the "left heater switch"

Any help with be great...

The switch on the temperature lever is supposed to supply a ground to the trigger circuit on the fan relay.

Your heater should work fine without the aux fan operating except at idle speeds. The majority of the time the air is going to be supplied by the engine cooling fan.

There is an 8x connector nearby, look for a brown wire w/wht. stripe on it. That's your trigger wire (according to the manual).