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Old 11-02-2008, 08:36 PM   #1
Junior Member
Join Date: Oct 2008
Posts: 20
Burned wires

Can anyone tell me why all 4 wires going to the a/c low pressure switch would melt all the insulation off going to the harnes connector and not any further,this is the dash a/c and of course the air does not work anymore.
08 Berkshire

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Old 11-03-2008, 07:44 AM   #2
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Join Date: Aug 2008
Location: New Mexico
Posts: 106
apparently you had a short. The insulation burned until the circuit opened - fuse blown, breaker tripped or conductor broke.

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Old 11-03-2008, 08:09 AM   #3
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Join Date: Mar 2008
Location: Southwest Alabama
Posts: 3,283
I'd suggest getting a service manual for the vehicle chassis on that unit. The A/C low pressure switch either feeds a relay or the clutch directly. In either case I agree that you have a short in either the relay or clutch. It is also possible that the wiring between the switch and relay/clutch shorted.
Salem 29RKSS Pushing a 2500 Mega-Cab CTD!
Gotta go campin!
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