Blown fuse--where to start. - Team Camaro Tech
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post #1 of 7 (permalink) Old May 21st, 06, 10:24 AM Thread Starter
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Blown fuse--where to start.

I'm having trouble with the 4amp instrument panel fuse--it blows once or so a week. It also seems that it was a problem before my ownership since I found gum wrapper in the fuse slot whent I started working on it! Nothing obvious about the wiring but wonder if you guys can suggest a good way to start tracking it down. It is a 68 coupe with the consol gagues.

Thanks!
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post #2 of 7 (permalink) Old May 21st, 06, 06:47 PM
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Re: Blown fuse--where to start.

That fuse feeds all the gauge illumination bulbs (gray wires) - look for a chafed gray wire that's shorted against metal.


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post #3 of 7 (permalink) Old May 21st, 06, 06:52 PM
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Re: Blown fuse--where to start.

yup, could be by the radio or heater, or very likely in the console. Last shot would be a problem with the pcb behind the speedo and tach, could be worn and shorting to the cluster case.





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post #4 of 7 (permalink) Old May 22nd, 06, 04:14 AM
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Re: Blown fuse--where to start.

If you have a DMM, use it to measure the amperage drawn.

You will find a 10A jack and GRD on the meter. Plug the red lead into 10A jack, turn the function switch to read Amps. Remove the fuse, place the leads across the fuse sockets, turn on parking lights, and view the amp reading. Most DMM's are fused at 10 amps.

As said, look for a chaffed wire. If you find none, then change the inst bulbs, all of them.

Is lighting for aftermarket radio/stereo on this circuit? Could be the problem of added load.

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post #5 of 7 (permalink) Old May 22nd, 06, 12:32 PM Thread Starter
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Re: Blown fuse--where to start.

Thanks for the help, these are all good places to start.

Many thanks!
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post #6 of 7 (permalink) Old Aug 12th, 06, 09:34 PM Thread Starter
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Re: Blown fuse--where to start.

I wanted to update you on what I found--bascially it was a bad bulb. The bulb would light up but would also short out. I could get it to short by pushing it side to side--the base was also very pitted. I replaced all of the bulbs on the circut and in the cluster and all has been fine since.

Thanks much for all of the help and ideas--they really made the job easier.
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post #7 of 7 (permalink) Old Aug 14th, 06, 04:07 AM
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Re: Blown fuse--where to start.

Your welcome.

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