Ricpreza13

Hey guys I know it's an old thread but I have a 05 gt sedan, AT. I havent been able to figure out why my AC ne vcd er turns on. I fixed the compressor and had the wires test to behind the radio unit but theres no power going to it unless triggered by the tester at which time the compressor turns on and cool air starts coming through. my car also jumps idle like it would when the compressor gets turned on when I press the ac control on but nothing happens. Any ideas if I'm not too late