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Elusive 12V constant wire (orange) 0V on wire no bad fuses that I can find

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Old 09-13-2016, 09:21 AM
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Car: 91 Camaro z28
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Elusive 12V constant wire (orange) 0V on wire no bad fuses that I can find

I just picked up a 91 Camaro Z28
after pulling the stereo out I found a butchered mess and a blown radio fuse
Beautiful Wiring
I replaced the radio fuse and checked the ctsy fuse *its good*
I have 0 volts on the 12V constant Orange lead
I have read through several threads saying there is a second fuse panel but I can't find anything in my car with fuses in it other than the main panel and those fuses are all good.
Where should I be looking to get the 12v orange lead energized again?


Solution:
I found that a fuse I had previously replaced labeled "ARC 20" was the culprit.
I don't see this in any of the threads so maybe this info will help someone else.

Last edited by Antinull; 09-14-2016 at 06:19 AM.
Old 11-06-2016, 06:59 PM
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Re: Elusive 12V constant wire (orange) 0V on wire no bad fuses that I can find

Sounds similar to what I am experiencing currently. My problem, is that the radio clock turns on but, the 12v constant isn't working. Actually, I'm pretty sure the Guy I bought it from removed it. My question is do you know where the 12v orange wire runs from and to?
Old 11-06-2016, 08:48 PM
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Re: Elusive 12V constant wire (orange) 0V on wire no bad fuses that I can find

Originally Posted by Troy Hemp
Sounds similar to what I am experiencing currently. My problem, is that the radio clock turns on but, the 12v constant isn't working. Actually, I'm pretty sure the Guy I bought it from removed it. My question is do you know where the 12v orange wire runs from and to?
Are you running a stock delco radio with a small square power button? If so chances are the switch is bad. Very common problem on the delco radios.
Old 05-04-2020, 03:28 PM
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Re: Elusive 12V constant wire (orange) 0V on wire no bad fuses that I can find

Originally Posted by Antinull
I just picked up a 91 Camaro Z28
after pulling the stereo out I found a butchered mess and a blown radio fuse
Beautiful Wiring
I replaced the radio fuse and checked the ctsy fuse *its good*
I have 0 volts on the 12V constant Orange lead
I have read through several threads saying there is a second fuse panel but I can't find anything in my car with fuses in it other than the main panel and those fuses are all good.
Where should I be looking to get the 12v orange lead energized again?


Solution:
I found that a fuse I had previously replaced labeled "ARC 20" was the culprit.
I don't see this in any of the threads so maybe this info will help someone else.
I know this is an older thread but I had the same issue on my car. here is a picture of the fuse block and where the ARC fuse is located. the correct fuse is circled in green.

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