stereo died when headlights turned on
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=24058
Printed Date: July 21, 2025 at 4:34 AM
Topic: stereo died when headlights turned on
Posted By: barbied
Subject: stereo died when headlights turned on
Date Posted: January 06, 2004 at 6:35 PM
93 grnd prix / older jcv unit. My son removed his new setup and went to put mine back in but we cant remember the wiring code. It plays now except when you turn on headlights the memory and power kills. When headlights are off the unit plays... Please help.
Replies:
Posted By: lspker
Date Posted: January 06, 2004 at 9:00 PM
Sound like you have hooked up to the dimmer wire, instead of acc. Check your power wires with the lights off and on, if it has 12 v with lights off and 0 when on its the wrong one. Find the one that stays on .
Posted By: barbied
Date Posted: January 06, 2004 at 9:10 PM
Thanks, I'll give it a try...
Posted By: serialthrlla
Date Posted: January 06, 2004 at 9:28 PM
I would say that you hooked the negative to the illunation wire, it will test ground until the Parking lights are turned on, then it wil go 12v. I have seen this happen to a few newbirs when hardwiring.
Posted By: evolutionoftym
Date Posted: January 07, 2004 at 4:14 AM
yeah it's definately the dimmer wire hooked up to your ground wire....then you're testing a wire you think might be ground.....test with your cars lights on.....if it still reads ground while the lights are on you've found your wire
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Posted By: sparkie
Date Posted: January 07, 2004 at 10:06 PM
There are two yellow wires and two brown wires in the radio harness. One brown is the leftr rear speaker positive and one yellow is the left rear speaker negative. the other brown is for the parking lights and the other yellow is ignition power. There are also two grey wires. The first one is the left front speaker negative and the second one is for the dash lamps that dim. Check with a meter to se which is which. The power/lamp wires are in the 6 pin section of the radio plug and the speakers are in the other two four pin sections of the plug. Hope this helps.
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sparky
Posted By: barbied
Date Posted: January 08, 2004 at 5:42 AM
Thanks for the info - I'll try tonight. I just want music again!!!
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