How to Find AC Wires in a Car

"Pull the dash piece. Behind here you have the crossover for the stereo system. Let's move that out of the way. You have your air conditioning components. Here is your heater core. Access in the heater core wiring is right here in this harness. But removable in installation of the heater core, the entire dashboard has to be taken out. Here is the evaporator box and your blower. To access those wiring, they are right here. Wiring for the blower, wiring for the heater control box. Of course these circuits are fuse also and they don't come on unless the ignition and key is turned."