Question for today is controlling the blower motor speed? My 80 Camaro came with AC. Years ago, I removed my AC and therefore the blower motor resistor block that attached inside the AC box. I just added an after-market blower motor cover on the firewall, made for my Camaro, but without AC. The blower motor works, but only has OFF and High Speed, because I did not connect the resistor block. I could live with the OFF and High Speed only selection, but I wonder if anyone has ever mounted the original blower motor resistor block to an after-market cover? The resistor block gets hot and needs to be in the blower vent to stay cool when operating. Or is there another way to control the blower fan speed? Any ideas are greatly appreciated as I am not in favor of modifying my after-market blower motor cover.

 

Do you have a picture ? I took the AC firewall box off my 1979 Z-28 .I used a non AC heater box instead that I modified I used some of parts from the AC unit such as the sensor and vacuum ball as well. I have had no issues

 

This is what I have now.

 

Resistor block needs installing as it gives blower lower speeds. It may be installed in box inside behind glovebox.
Unless block was connected to shown connector and and power should be at all terminals of connector shown with selected speed.

 

I removed the resistor block years ago and can't find it. It was connected to the open connector by my relay. I have a new resistor block on order and will see if I can control the fan speed. If it works, I will find to find a way to mount it to my new fan cover.