Not that i dont live where its 100 degress most of the time and will probably never need the heater, but i have to try.
low med work fine, but where is the darn high blower fuse along the fire wall? it doesn't show in my New/old manual i finally bought from a member.
It just talks about it. Anyone can narrow done the location or have a pic by any chance.
also going to need help with vacuume diagram.
Johnny!

 

Find the horn relay, it gets power from the stud on the relay.

 

Ok so i think i found the issue the relay is getting hot when i jumpt it the hight goes on i tried cleaning the points and ground it works on and off and you have to bang it.
So how do i know if i have auto tempature control or manual?

 

ATC wasn't available in A-body till 1973.

 

You have to bang the relay, or the motor to get it working? Obviously, that’s not normal. If the relay is getting hot, that suggests the motor may be pulling too much current. If the fuse or relay connector is melted, that’s another clue. The blower motor draws 2-3 times it’s normal current during startup, the wiring isn’t designed to carry that much current continuously.

 

Yes, I tapped the relay once and it worked.
the high speed.
nothing’s getting hot or melting.
Needs a new relay