Trying to find the heater motor speed control. On the Breakaway you have a heater speed switch that has 4 fan speeds. The fan motor has only a 12v input and the voltage input ranges between 5 and 12 volts. Some where there exists a module which gets the voltage from one of the speed switch position and then thru a resistor to give the output voltage for the fan motor. Does anyone have any idea where that unit is. Any of the other diesel pushers may have the same setup.
HELP!!

Hi Gary that motor speed resister you speak of on mine is on the front firewall up high near where the vacuum tank is located. as I open the access door to the front genrator area it is on the right looking in and look up from there.

HTH.

Gary on DBarth it was dead center in the front firewall at eye level. Well my eye level so up high. Also on Midnight pretty much the same place.

Thanks Ed. Found it this morning. In the center just in front of my eyes. Still can't figure out my problem. Fan works fine in the lower speeds but on high speed it cuts in and out. Checked at the motor and it loses power and the regains power. This is nothing new as it was like this when we bought it, but now that I have the dash ac working on propane would like to enjoy the cool air. Need to find the motor power source.

I gave up at this time trying to discover why the fan turned on and off when high speed selected. Put a new wire to the motor and connected to a fuse that provided power when the ignition switch is on. Now the high speed works great. When the weather cools off down here next fall will be back on the project.