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Discussion Starter #1
The AC switch light starts to blink after couple of seconds. The clutch engages every time I turn the switch off then on, but stops again after couple seconds.
i could not add refrigerant without the clutch engaging, so I hot wired it and added some.
the cold air comes out nicely, but when I put the harness back same problem occurred.
If the clutch engages and I got cold air when hot wired from the battery, does that mean the compressor is good?
How do I check the resistance on the compressor? It has three wires in the plug
 

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Discussion Starter #2
I got ac manifold and tested for refrigerant. The readings were all good when the truck is off and on (ac clutch plugged to battery).
I can only see one pressure switch on left side. I believe it's the high switch. Checked for continuity and it is closed.

Where is the low pressure switch? Does it even have one?
Should I just bite the bullet and replace the compressor?
 
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