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Old 03-01-2015, 12:19 AM   #9
alero03
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Join Date: Jan 2015
Location: round rock tx (austin)
Posts: 7
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Quote:
Originally Posted by Nas Escobar View Post
The dimmer light lead on the car's radio harness (not the actual harness that's on the radio) is either shorted or grounded. I've had this issue before on my Cutlass, no fuse blown but it would act weird sometimes. Basically the "orange" wire is touching the metal chassis of the aftermarket head unit or you wired it wrong when you hacked off the stock clip. Regardless, your issue may lie around there. On the Alero side, it should be a gray wire that's placed bad.

Here's also the color codes for the Alero's radio harness, if you want to verify that you put back the clip on right.



Graham may have posted the same info that I did in his pics, but I find those diagrams hard to read. I probably should learn how to read those schematics but anyways...

TLDR, check your dimmer wire on both the radio and Alero harness.

@nas escobar:
I don't think that is the problem, If the orange wire was hitting the chassis at all wouldnt it lose voltage? because it still powers the radio and has a voltage reading. It is just the gray wire going into the back of the instrument cluster, and the green wire that goes to the dimmer wheel. and according to my haynes manual and now @a.graham52's diagrams, since the orange wire still has a voltage reading of 12.xx then teh culprit could be the "I/P dimming module" reffered to in the dimming controls section of the schematic since it takes power from the yellow+ wire and then splits it into a green and then a gray wire that go to the dimmer wheel and dash backlights respectively.

And @a.graham52 THANK YOU these diagrams were much easier for me to understand compared to the haynes manual for some reason, you are a lifesaver
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