thought i found short, was WRONG - MustangForums.com


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Old 01-16-2007, 09:13 PM   #1  
telsonman
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Default thought i found short, was WRONG

so i thought i found the short in my speedo cluster on my 87 GTthat was keeping the illumination from working. i found the dimmer switch heating up like crazy and blowing fuses. well, i just replaced it, the new one doesn't blow fuses, however, the instrument illumination still doesnt work. i'm guessing that i just need a new speedo cluster, or a bulb is blown. any ideas or help???

thanks,
jeff
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Old 01-16-2007, 09:38 PM   #2  
mattdel
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Default RE: thought i found short, was WRONG

the speedo cluster has about 20 bulbs, pretty impossible for them all to not work. the back of the cluster has a printed circuit board kinda thing, but thin and flexible. probably burnt a circuit in the leads to that.
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Old 01-16-2007, 09:40 PM   #3  
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Default RE: thought i found short, was WRONG

lemme ask ya, do the a/c controls light up? if not, there is a loose wire behind the radio on our foxes that for some reason, will turn the dash lights on and off when shorted.
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Old 01-16-2007, 09:58 PM   #4  
wine_maker
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Default RE: thought i found short, was WRONG

could be the headlight switch too >>> test meter <<<< a must on electric sh*t

^^^^^^^^^^^^^^^^^^^^^^^^^
controls dem to brightfor dash lights
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Old 01-16-2007, 10:47 PM   #5  
telsonman
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Default RE: thought i found short, was WRONG

no, the A/C lights DO NOT light up. what do i do now??? i have an aftermarket head unit too.
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Old 01-16-2007, 11:01 PM   #6  
mattdel
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Default RE: thought i found short, was WRONG

check behind the radio for loose wires. i guarantee that is your problem. any wires not connected to anything, make sure they are taped off good.
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Old 01-17-2007, 12:18 AM   #7  
telsonman
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Default RE: thought i found short, was WRONG

ok, i'll get on that tomorrow and let you know what i find.
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