Need seat fans wiring help

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Nov 12, 2017 | 01:45 PM

Smokeyjr

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From: Wisconsin

c7 question

Does anyone here lnow which wires on the seat harness control the seat cooling fans....and help is apreciated

Last edited by Smokeyjr; Dec 10, 2017 at 06:06 PM. Reason: don't need

Nov 13, 2017 | 05:35 PM

red 1

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From: Louisville Ky

Quote:

Originally Posted by Smokeyjr

Does anyone here lnow which wires on the seat harness control the seat cooling fans....and help is apreciated

Hope these help;

Nov 13, 2017 | 06:19 PM

Smokeyjr

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From: Wisconsin

do you also have a wire color legend please

Nov 13, 2017 | 06:34 PM

red 1

Racer

Joined: Aug 2007

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From: Louisville Ky

Quote:

Originally Posted by Smokeyjr

do you also have a wire color legend please

Nov 13, 2017 | 06:40 PM

Bill Dearborn

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From: Charlotte, NC (formerly Endicott, NY)

Quote:

Originally Posted by red 1

Hope these help;

Quote:

Originally Posted by Smokeyjr

You rock!!...I am wondering if the wires feed into the main seat harness or do the have a seperate plug of there own....i an thinking the main yellow harness and what pin numbers they would be

Notice the data link symbol exiting the radio/hvac module. The signal from the radio/hvac module is a digital signal that tells the seat modules to turn on the blower. Once the seat modules turn on the blower they use a PWM power signal to control fan speed. You just can't apply a voltage in place of the digital signal as the seat module won't respond to a level.

Bill