Hey guys, I have a 99' f150 4x4 that I bought from my son and have nearly done a frame off restoration (it was trashed at a local mud bog that my son frequented). I have the cab back on, new motor in, dash put back together after replacing heatercore (that was a chore) and finished the interior this morning and went to have air charged up. Problem is it is holding freon but I cant get compressor to kick on. Have checked hi and lo pressure switch, all fuses and relays are good so I need help tracing out the problem. I need to know the sequence of events that make the compressor kick in so I can check connections with test light and find the problem. Supposed to be 103 degrees here this weekend.

Thanks ahead for all your help.

Mike