code 79...Even when in off position

Ok every time I do a KOEO test I alway first get code 79(A/C or defrost on during self test.) Even when the switch for the a/c is in the off position....I recently had all the a/c components replaced(comporessor, condesor, hoses, freon.. whole a/c system) And when the switch is in off position, When I check the a/c compressor the a/c clutch is kicking on. cycling on and off, like I have the a/c switch in on position, when I have it the off position. and when I unplugg the wire to the a/c clutch it stops cycling...also when I have the Key in the ignition turned all the way on where it primes the fuel pup and all the gauge lights and CEL is light up, but not starting the car...IF I turn my a/c switch onto max or vent or and position, It interupts the starting and redoes the fuel pump prime, and will make it flash the CEL lights in the dash every time I a/c switch to a different position...I know this is a electrical problem, any one know where to start looking? Could it be a bad ground?

Thanks alot, I test all the wiring and figured out I have a bad WOT relay...I guess the people before me put a wire to make the a/c clutch come on all the time, and then I tested the relay and found it was bad and thats why they had it wired incorrectly...Now all I need is a wot relay....Im not sure wheres the best place to get one...autozone has one for 15 bux, should I check else where ?

on the relay, when you open it, they put a wire that connects the power or something so it gets constant voltage, and always makes the compressor clutch to stay on, I tested the relay and its bad.