2001 Mustang V6 AC compressor does not actuate. I've read ~200 threads with some historical relevance to this problem, but still no definite answer. High and low pressure is OK. Low pressure switch replaced, no change. Shorting the low pressure switch does not actuate compressor. Compressor works when hooked up to battery, but no power to the compressor from the compressor plug. Some replies state to check the ground and relay. But what ground? And no good description of the relay or its location was found. I haven't tried the battery disconnect for only one thread tried it and it didn't work for them. Any other ideas?