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Installing A/C Switch, Anyone?

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Old

Nov 10, 2008 | 10:41 PM

#1

Bigfwt04

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Installing A/C Switch, Anyone?

I am looking to install an a/c switch so that the stupid compressor doesn't come on with everything but the vent. Anyone don't that? Where would I hook in?

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Old

Nov 10, 2008 | 10:58 PM

#2

mueckster

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Joined: Jun 2003

Posts: 8,298

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From: Damon (South East Texas)

You could splice a switch into the purple wire behind the climate control. This is the wire to the a/c clutch cycling switch, according to the wiring diagram in my shop manual.

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Old

Nov 10, 2008 | 11:15 PM

#3

jtharvey

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Joined: Oct 2004

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From: Columbia, MO

What Roland said should work just fine. There's only two wires to the compressor, so interrupting either one with a switch should get done what you're trying to accomplish. The wire behind the CC panel would definitely be the cleanest to do, as to not run any extra wires through the engine bay and have them all hidden behind the dash. Not sure if it would throw any kind of codes, but I don't know that anyone has done this previously or not for reference.

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Old

Nov 10, 2008 | 11:17 PM

#4

Bigfwt04

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Quote:

Originally Posted by jtharvey

Not sure if it would throw any kind of codes, but I don't know that anyone has done this previously or not for reference.

Hasn't it ever bothered you that it is always cycling when not needed for cold air or defrost? J/K

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Old

Nov 10, 2008 | 11:18 PM

#5

empiretc

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that will work just fine. these guys got u pointed in the right direction.

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Old

Nov 10, 2008 | 11:22 PM

#6

jtharvey

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From: Columbia, MO

Quote:

Originally Posted by Bigfwt04

Hasn't it ever bothered you that it is always cycling when not needed for cold air or defrost? J/K

Honestly, no. I don't mind it at all since it's taking the moisture out of the air, making the cab of the truck less humid and stuffy. I've just learned that if I don't want the compressor on, I just run it either on floor only or panel only. Compressor doesn't kick on in either one of those settings.

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Old

Nov 10, 2008 | 11:25 PM

#7

Bigfwt04

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Quote:

Originally Posted by jtharvey

Honestly, no. I don't mind it at all since it's taking the moisture out of the air, making the cab of the truck less humid and stuffy. I've just learned that if I don't want the compressor on, I just run it either on floor only or panel only. Compressor doesn't kick on in either one of those settings.

Well, its fairly low humidity up here so maybe that why

Thanks for the help guys

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Old

Nov 10, 2008 | 11:28 PM

#8

jtharvey

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Joined: Oct 2004

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From: Columbia, MO

Quote:

Originally Posted by Bigfwt04

Well, its fairly low humidity up here so maybe that why

Thanks for the help guys

Very well could be. It can get pretty humid here in MO, even when it's cool out. Not as bad as the south eastern states, but still. Let us know how it works and how you go about getting it done.

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Old

Nov 11, 2008 | 07:32 AM

#9

Kwikkordead

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Joined: Jun 2004

Posts: 25,090

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From: Rio Rico, AZ.

This is one of the projects that I want to do as well.
Sometimes you just don't need the AC compressor on and want to use the defrost vent for cabin air.

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ac, cycle, installing, jetta, switch, vw

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