I have a 1999 Super Duty F250 4x4 5.4 Triton. Can anyone tell me which fuses or relays are for the A/C? Looked thru manual shows no A/C. Also any good troubleshooting videos or step by step tips on fixing? Also on replacing compressor or clutch steps . A/C just quit one day driving. I have set of gages hooked them up both sides show pressure, didn't write them down, also don't know if the clutch is engaging or not, I looked the pulley is spinning but can't seem to tell if clutch is working or if compressor is working . I did put a can of Freon in but didn't help..........novice for sure with A/C any & all help gratefully appreciated............