I have an air delete and while putting the box on I noticed the plug is different. A search on here told me this was true. I took the male end off the box and saw it had coils on it. and I assume it send a signal to the relay. I see a purple wire that runs the fan. I need a wire diagram. I put a meter on the 4 plug wire from the harness and bever saw 12 volts anywhere. How does all this work?