Heater (electrical) Questions ???

[62gmc910]

Originally Posted by Sicboy

So, I replaced the blower motor and it did not fix the problem. Then I replaced the butt connectors on the ignition switch. Still having the same issue...the ignition terminal on the ignition switch gets burning hot when heater fan is on. I just ordered a new ignition switch from Brothers, hoping that it's the problem.

It won't you need to run a relay : take a 20 amp in line fuse (plug in type prefferably with cover ) hook to the power wire at the horn relay or at the battery which ever is better get a bosch style hi beam relay and a plug tomorow I will find one and draw a diagram and get part numbers for now just use the second highest fan setting