So, I have been chasing a parasitic draw on my truck, I have tracked it down with 100% certainty but now need help to fix the issue. Just a quick recap I did a draw test, it was fuse/circuit breaker 12 that was causing the draw, it was strange I kept hearing a clicking noise every time I would put the fuse back. Anyways we found that when the AC **** is turned to mix, defrost AC and AC max the AC clutch engages with the truck off, but when u set the **** to off the clutch doesn't engage and no power is drawn. So now I need help trying to figure out the issue, I have looked and the relays and there is not an AC replay, but something is causing it to engage if I shut off the truck but leave the **** turned to AC. Anyone else have this issue? Anyone have a wiring diagram I could follow,? Any help would be greatly appreciated

 

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