There is a solid lonesome brown wire, under the dash in the A/C heater harness. It has a female plug. Where does this plug go? The whole switch seems not to be getting power. I've checked the relay and I only have power on the big red wire. I'm thinking I need it on about 3 of those wires. The fan motor is good and the resister seems ok. Why can't I get any blower controls? Also I can't get my fuel tank to register. These are the only issues I have after installing a complete harness, A/C,gas tank, motor and steering column in my K5. Help me please. This will have to be my DD since I've sold my S10 and my other K5 seems to have lost its doors and top.