A/C compressor wiring - JeepForum.com
 
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post #1 of 8 Old 07-08-2015, 07:52 PM Thread Starter
BaileysZJ
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A/C compressor wiring

Hello, basically I bought an A/C compressor because my compressor clutch was fried. The compressor I got was a different connection to the clutch assembly. The one that fits my jeep is a single pin where as the one I received was a double pin. Any ideas on how I can wire these to make it work? Thanks. And I'm sure someone will have questions it's a kind of confusing situation lol

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post #2 of 8 Old 07-08-2015, 11:01 PM
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The single pin setup gets its ground from the engine, the single wire is the power wire. More likely the double pin connector has a ground wire instead. If one of the wire is black, this would indicate that's the ground wire, that would be the one you would want to AVOID connecting the power wire to. You have a digital voltmeter? You can test this very quickly to confirm.

My only concern is if the wire connector is wrong, are you sure this compressor is the correct fit?

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post #3 of 8 Old 07-09-2015, 05:01 AM
coralman
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Aftermarket comps do this all the time, for ZJ's anyway. I believe some come with an adapter harness.

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post #4 of 8 Old 07-09-2015, 10:16 AM
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Since a compressor clutch is a solenoid it won't hurt the compressor if you wire it wrong. If both compressor connectors are isolated from ground it won't hurt the jeep either. One direction wil work and the other won't.


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post #5 of 8 Old 07-09-2015, 11:13 PM
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Quote:
Originally Posted by kg6mov View Post
Since a compressor clutch is a solenoid it won't hurt the compressor if you wire it wrong. If both compressor connectors are isolated from ground it won't hurt the jeep either. One direction wil work and the other won't.
You're right if the connectors ground is isolated from the compressor it won't hurt to wire it wrong, didn't think of that. In fact in this case he would have no choice but to connect the ground of the connector to the ground of the vehicle to complete the path. He's gonna have to run some tests to find out which connector is the ground, since solenoids are polarized and the direction of current does matter.

But if the connector is grounded to the compressor and he wires it wrong, that's going to create a short and in the best case scenario pop a fuse. Therefore, to avoid.

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post #6 of 8 Old 07-10-2015, 03:51 PM Thread Starter
BaileysZJ
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On the old compressor it looks like it grounded right to the compressor (which I tried) and it didn't work. Do you think taking it to one of the engines grounds would work better?
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post #7 of 8 Old 07-10-2015, 09:33 PM
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No, shouldn't matter.

Also, why did you replace the whole compressor instead of just the clutch?


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post #8 of 8 Old 07-10-2015, 11:29 PM Thread Starter
BaileysZJ
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Because when I went to remove the bearing race that was rust welded on the compressor housing around the center shaft broke with it.(little too much force)
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