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Discussion Starter #1
I just bought a 2004.5 2500 diesel . I hot wired the ac compressor today. Blows cold now but I’m looking for a safe fix.
 

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Have you put some gauges on it to see what's going on? There are several reasons the safeties will disengage the compressor. I'd be fearful of damage to it if you ran it that way for the rest of the summer.
 

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A low charge in the AC system can cause a compressor to not work.
 

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Discussion Starter #4
It’s well charged, it has a previous installed external relay for the ac. Receptacle 85 wasn’t putting out enough power to the relay so now I have it plugged into 87 and it seems to be kicking it in and out as it should. This also made the fan kick in .
 

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As long as things are working as they should be.

The wiring seems messed up. 85 is normally the ground and 87 is the 12v output.
 
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