I have a new blower motor, but i can't get it to blow on the highest setting, I think it may be wiring, because it used to blow. Any suggestions?

I have a new blower motor, but i can't get it to blow on the highest setting, I think it may be wiring, because it used to blow. Any suggestions?

The high blower setting runs off a seperate line than the rest. It will be a line from the back of the alternator and I believe it still runs through the relay. I will look at mine and let you know if no one else answers.

Theres a heavy gauge red wire that runs from the alt wire harness to the a/c heater box wiring. check the connectors I just fixed mine it had a some bad corrosion. Also the silver relay on the side of your a/c box can also be the problem.

If I have too live life on my knees I'd rather die on my feet.

Mine is a 403 car and there is a connector on the passenger side and slightly forward of the carb. Mine has corroded in the past. Try cleaning that connection.
Warren
79 T/A,WS6,A3,403
96 T/A,WS6,M6
72 442,W30,A3

I think I know exactly which wires you all are talking about, thanks for the help. David