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Old 05-11-2018, 08:32 PM   #1
BBCamaro
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Ac wire question

I have a 71 Chevy and the air compressor wonít engage however I did notice that there is a plug under the dash(2green wires and 1 yellow) itís a 2 post plug and I canít find where it plugs in .. any help will be appreciated.. thanks
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Old 05-12-2018, 01:10 AM   #2
kwmech
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Re: Ac wire question

If I'm not mistaken it should plug into the switch near the center vent? (if that makes sense)
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Old 05-12-2018, 05:40 PM   #3
Stocker
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Re: Ac wire question

Sounds like the 2-prong plug that goes to the A/C compressor switch. Kinda hard to find but it's located behind the heater box under the dash, slightly to the right of the cig. lighter. This is what you're looking for:



The switch mounts with the connector prongs down, and the button activator on top. The button is operated by the A/C and Heater outlet slider at the center of the HVAC control.
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Old 05-14-2018, 10:16 AM   #4
BBCamaro
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Re: Ac wire question

Yes thatís it....mine is missing but at least I know what I need now.. thank you
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Old 05-14-2018, 08:49 PM   #5
Stocker
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Re: Ac wire question

Glad I could help. Last year we did a lot of A/C work on my K20 and had several issues. Installed virtually all new parts but compressor would not come on because that switch was faulty. Had a bear of a time finding it and replacing it.
Good luck with yours.
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Old 05-14-2018, 09:57 PM   #6
BBCamaro
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Re: Ac wire question

I do have another question.. the pass floor vent opens with vacuum but doesnít close .. is there supposed to be a spring on the door to close it??? Thanks Jim
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Old 05-15-2018, 12:58 PM   #7
Stocker
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Re: Ac wire question

Yes, there's a spring from the vacuum actuator to a tab on the vent door.
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Old 05-15-2018, 01:23 PM   #8
BBCamaro
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Re: Ac wire question

Thanks again.. Jim
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