View Single Post
Old 05-15-2011, 10:10 PM   #19
85gmcguy
Plays with trucks
 
85gmcguy's Avatar
 
Join Date: Sep 2003
Location: Asheville, NC
Posts: 433
Re: my Defroster Debacle

Quote:
Originally Posted by rayfinseats View Post
Question: If I hook a positive 12v wire to the one lead on the heater blower motor on my 83 it should come on right ??? Cuz mine don't.
That would be my basic understanding. The wiring for the motor feeds through resistors located on/in the heater box to provide speeds below "high". If it fails, you only get "high", so I'm guessing the motor is shot. Shouldn't be expensive but will probably be a major PITA to change.
__________________
Gary

My Dad's Old Truck
1985
85gmcguy is offline   Reply With Quote