Ok, so I'm still battling with my A/C. I've thus far replaced the heater/A/C control switch, the high pressure cycling switch, low pressure cycling switch, and the compressor. I've narrowed it down to an electrical problem. I've looked my wiring diagram over and over, and in theory it should be working. What else should I check? I've checked the A/C relays and fuses, and they all work.

Why isn't this working?!