I'm now at point where I've bolted in the heater and got my hoses all connected. Next is hooking up the electrical. I see there are 2 wires that come off the heater motor and I found the heater knob in one of the many boxes that came with my truck. It has two leads so I assume one is for hot and the other to the heater. Is the extra one from the heater just a ground? Couldn't find anything about the heater switch wiring in my diagram. Also I've converted to 12v so I'm assuming a voltage reducer in line as well. Should it go before the switch or between the switch and heater motor? Any light on the subject would be greatly appreciated.
