Anyone know about them played with one? I can’t find a decent wiring diagram. I have a good earth to the motor. If you remove the 3 pin plug on the resistor it has 12 volts on each pin depending what speed setting your on. So I guess that’s the interior wiring and switch ok. There is a single wire the other end of the resistor. I’m guessing that’s the signal through the resistor to power the motor. If I un plug that terminal and power prob it the motor dose not work. Am I right in saying the blower motor is the fault?