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Fog lights blow fuse?

 
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Old 05-16-2011, 04:28 PM
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Fog lights blow fuse?

Okay so I have a small issue.. I installed some new fog lights I bought off of eBay. They came with their own wires, and relay, and I used the wires to connect to the prewiring that already comes in the prelude. I grounded them too.
But they've blown a fuse twice already. I turn them on and they'll work normally and stay on for about 10-20 minutes but then they blow a fuse that says "r/c mirror (abs, atts)" and then my air doesn't work at all and my abs light comes on.
Once I replace the fuse everything works perfectly again.

I admit I'm not too familiar with how wiring works, I just followed the DIY's I found on here.. So does anyone know what the problem could be? I'm gonna recheck everything to see if I find anything odd but idk what to really look for. If you guys know what could be causing it, I'd appreciate it
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Old 05-17-2011, 10:44 AM
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Re: Fog lights blow fuse?

Double check your wiring...also check the electrical wiring diagram and trace the wires that lead from the fuse..then check those components..also check along the wires to make sure it is solid and not shorting out to another wire or ground.
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Old 05-20-2011, 02:27 PM
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Re: Fog lights blow fuse?

man, when you blow a fuse.. repeatedly, as you are, you have a short to ground somewhere.

the positive wires have a chafe or a place where the insulation is worn off enough to contact the frame or other chassis ground.

re check all the wiring, or run new wires to your fog lights.

good luck..
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Old 05-20-2011, 05:03 PM
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Re: Fog lights blow fuse?

A short to ground would cause the fuse to blow immeadiatly. It wouldn't wait 10-20 minutes.

there are two issues that come to mind:
1) the improper size fuse is being used; excessive amperage is being draw above the normal +10% tolerance of the standard automotive fuse you have in there. It heats up slowly [in electrical world] and finally gives away as the weak link it is supposed to be.
2) improper wire size creating resistance - aka too small. As the lights are trying to draw their required amperage to glow at their rated intensity, the wire is fighting this demand and heating up. Again, the fuse is designed to be the weakest link and is "blowing" before the wire can get hot enough to melt, and in the worst case scenario, start a fire.

What model/type of fog lights are you using? Any specs on 'em?
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