New head unit in an 08, canít get power - Cobalt SS Network



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Old 11-11-2017, 04:17 PM   #1
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New head unit in an 08, canít get power

Iíve searched and searched and canít find anything really. Iíve a JVC Z140BT with the axxess GMOS-LAN-04. I wired it all up plug it all in.... nothing. Searched and rewired it in case of a weak connection.... nothing. Maybe Iím not looking in the right place or Iím just missing something but I canít get this thing to get power to it.
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Old 11-12-2017, 06:47 PM   #2
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No power at all? Or just no sound?
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Old 11-12-2017, 06:51 PM   #3
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I know when I originally tried to wire mine I couldn't get sound out of it. The amp wiring is kinda funny so I just wired it totally independent and by passed everything. Course I got a totally aftermarket setup also.
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Old 11-13-2017, 09:52 AM   #4
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Is the axxess GMOW-LAN-04 the adapter module? I can't help you get that to work but I know when I installed my CD player, it was a long time ago so I am not for sure, but I ran my own accessory wire. The only reason I can think of for why I would do that would be because I couldn't find a good accessory wire to use when I installed it. So someone else will have to help you with making the adapter work but all else fails you can run your own wire.
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Old 11-14-2017, 12:13 AM   #5
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I was able to get power, kinda. Had to run both reds and yellows together so Crutchfield is sending me a new module. Didnít get any better because even with power I had no sound. Did some more digging and saw wiring directly to the amp power got sound.

Now I have sound but the static was god awful so I guess Iíll have to do an amp bypass.
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Old 11-14-2017, 05:48 PM   #6
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I'd imagine it could be a DOA harness. I didn't spend for the GM one, I got the Metra. I like not having all the chimes and signal "clicks", although I do miss my steering wheel controls a little.
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Old 11-14-2017, 10:16 PM   #7
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I should get the new one by tomorrow so Iíll see how it turn out.
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