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Old Mar 26, 2007 | 10:58 AM
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Default electrical problem

I just had a new radio put in the car. It was working fine but when I turn on the wipers the radio power goes off. Then today while I was driving into work It started turning on and off. Could this be because of a fuse being too small to handel the load.

Jeff
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Old Mar 26, 2007 | 11:33 AM
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No, if the fuse was to small it would blow. They have something wired wrong or you might have a wonkey ground. There is a black ground wire in the dash harnes that attaches to the drivers side door pillar behind the dash. You can run a temp ground from the radio chassis to a real ground point of the battery Neg and see if that fixes it. Look at the wiper motor ground, make sure its not broken.
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Old Mar 26, 2007 | 11:36 AM
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What circuit did you use? It almost sounds like a circuit breaker cycling on and off.
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Old Mar 26, 2007 | 11:49 AM
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Who installed the Radio?

Here is a link to your wipers.
http://www.corvetteforum.net/c3/tune.../index25.shtml

Here is a link for your old radio,maybe, as this is for a 78 not a 79.
http://www.corvetteforum.net/c3/tune.../index13.shtml

I don't see any connection between the wipers and the radio as they do not share the same fuse. It looks like you may have to take it apart to see how this mess was wired up.


Dale
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Old Apr 1, 2007 | 10:34 PM
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Originally Posted by dalewilson99
Who installed the Radio?



Dale
I brought it to a audio place near my house. You should have seen how the old one was wired. I was going to do it myself until I saw the mess. I guess I could bring it back to where I got it done and see if they will trouble shoot it.
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Old Apr 1, 2007 | 10:39 PM
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Originally Posted by SIXFOOTER
No, if the fuse was to small it would blow. They have something wired wrong or you might have a wonkey ground. There is a black ground wire in the dash harnes that attaches to the drivers side door pillar behind the dash. You can run a temp ground from the radio chassis to a real ground point of the battery Neg and see if that fixes it. Look at the wiper motor ground, make sure its not broken.
Wonkey ground?
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Old Apr 1, 2007 | 11:14 PM
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Possibly, the wiper motor ground is a weak link. Replacing it is a cheap and easy fix to be done with installing a #10 wire on the ground post at the ac box to ground.
A good ground is kind of hard to find under the dash, Installing a real one under there is a good idea.
I wonder where they picked up the power for the radio?
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Old Apr 2, 2007 | 09:08 AM
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Default Wonkey Ground

Yep, thats one of those new technical terms used in the power supply business.
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Old Apr 2, 2007 | 09:14 AM
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You guys are killin me here.
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