Direct Wiring for 2006 HHR with 7 speaker system and Amp
 

Direct Wiring for 2006 HHR with 7 speaker system and Amp
(for those who choose to keep the factory amp and change the head unit)
(or those who wish to use the factory amp with a carputer)
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[Harness 1]
Battery(+) = [RED/WHITE]
Ground(-) = [BLACK/WHITE]
Left Front Low Level = [DARK-GREEN(-)] [TAN(+)]
Right Front Low Level = [LIGHT-GREEN(-)] [LIGHT-GREEN/WHITE(+)]

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[Harness 2]
Amp Turn On Signal (same as power antenna) = [PINK]
Left Rear Low Level = [BROWN(-)] [BROWN/WHITE(+)]
Right Rear Low Level = [TAN(-)] [DARK-BLUE(+)]

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The ignition line will have to be sourced elsewhere
as it is controlled by the GMLAN.

Check the fuse panel to the right of the center console for a source.

[Hint](Power windows work after you shut off your car, until you open a door!)

Power windows are retained accessory, which is probably interlaced with the dome supervision...that's not a wire you're going to want to jump. The BCM is in the same panel as the fusepanel...you can grab the main accessory wire from the BCM- that's going to be your best bet.

You can also grab accessory at the ignition harness

http://www.directechs.com/timages/acc_6041.jpg

It's the brown wire there

To enhance your work, here are pictures of all the audio connectors and pin outs.

http://n8zcc.com/pics/HHR/Audio_Connectors.pdf