Long story short. Engine swapped a 1999 Cat 3406E into the truck.
My understanding is that the ECM on the old D16 controlled the A/C Compressor, fan over-ride and took the inputs from the high/low sides and transmitted that to my climate controller in the cab.
I wonder if there is a direct output from the Climate controller and direct inputs I could direct wire the sensors, compressor clutch relay and fan over-ride relay directly to the Controller?
Does the cummins version have a different control scheme?
I would love to just take this to a shop and pay to have this done quickly, nobody I call will even look at it, so I have to try and troubleshoot it myself....
Any ideas on what to do?