AC & Heater Blower Question

[ducvw2004]

When I bought my 81, the blower and AC were completely non-functional.

I replaced the Blower relay (the one mounted on the firewall above the blower).

The blower will now run, but only in the high position. All other settings nothing is happening.

Any suggestions as to where to look next?

 

[ducvw2004]

Figured it out.
Blower motor resistor.
Now I just need to figure out the rest of the system.

 

[73shark]

It may be just the wiring to the resistor and not the resistor.

 

[ducvw2004]

I cleaned the connnection with electrical cleaner and it worked fine! Thanks!