Dash Lighting Out - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

 
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post #1 of 2 (permalink) Old Nov 16th, 07, 10:56 AM Thread Starter
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Matt
 
Join Date: Jul 2005
Location: San Diego, CA
Posts: 59
Dash Lighting Out

I noticed my dash lights weren't working. Checked the fuse on Tail circuit (20A), which was blown. I replaced the fuse and when I turned on the headlights (which work) and the dash lights won't work and the new fuse blew.

1) What other electrical components are on this fuse?
2) What is the best procedure (easiest to hardest) for troubleshooting? Don't want to pull the dash first if I don't have too.
3) What typically causes blown fuses, poor grounding?

Thanks in advance.

Matt
1968 RS Convertible, 327/275HP, Rochester 4bbl, PG Trany, non-a/c

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post #2 of 2 (permalink) Old Nov 16th, 07, 11:27 AM
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Jim
 
Join Date: Dec 1999
Location: Yorkville, Illinois USA
Posts: 22,121
Re: Dash Lighting Out

From some of the questions you are asking, I think you might benefit from reading some of the articles in the electrical basics sticky.... just a suggestion.

Fuses are blown by "short circuits," that is, unintended paths to ground which draw more current than the fuse can take. Note the use of the word "unintended."

The instrument lamps circuit includes the headlight switch itself, and the "dimmer" rheostat in the headlight switch. From there, it goes to the LPS fuse in the fuseblock. This is a 4 amp fuse. From there it goes to the lamps themselves.

Since you are blowing the 20 amp tail light fuse, NOT the 4 amp LPS fuse, your problem must be in the headlight switch itself. There's a few other things it could be, but not very likely.





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