Originally Posted by Deve
Visually, if the motor pretty much covers the entire hole on the firewall, as if it belongs there, chances are its the original motor. What you need is a switch like the one I pictured here:

http://devestechnet.com/Images/Projects/12VUpgrade/12VUpgrade0006lg.jpg

then a reducer like this.

http://www.speedwaymotors.com/Voltage-Reducer-for-Fans-and-Motors,2375.html

put the reducer before the switch so it encompasses the entire circuit or you will have the same problem you have now.

If that works for you great. If not, that instruction I posted above will help you change to a 12v motor. Even if the heater is different, the motors are the same.

Thanks Dave, very helpful. Abroad at the mo in West Africa (we Brits do get about) but will have a go if I can locate the parts.

Last edited by Essexeddie; 10/06/2015 8:47 PM.
55 Chevy Stepside.