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Old Jun 13th, 19, 06:18 AM
Alan71 Alan71 is offline
 
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Default No cluster lights

I have just changed all the bulbs in the instrument cluster. When I turn on the headlights they come on as well as the External tachometer. I’m not sure what else to look at to get the cluster lights on. I’m guessing it’s something with the headlight switch, is there a way to test it. Or should I be looking elsewhere?
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Old Jun 13th, 19, 12:12 PM
Big Dave Big Dave is offline
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Default Re: No cluster lights

You could have seven burnt out 1895 light bulbs, or ...
the light switch is turned to off (or burnt out since it is an old rheostat), or ...
you have a blown 10 AMP fuse located at INST in your fuse box.

Time to get out your trusty multimeter and test circuits.

Big Dave
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Old Jun 13th, 19, 12:41 PM
Alan71 Alan71 is offline
 
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Default Re: No cluster lights

Yeah kinda what I was thinking.
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Old Jun 20th, 19, 07:20 PM
cottonwood green cottonwood green is offline
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Default Re: No cluster lights

I agree with Big Dave as the probable cause, but also check for a missing screw of several that attaches the instrument cluster assembly to the metal dash panel. The printed circuit on the back of the instrument cluster is grounded by one of those dash screws that passes through the circuit board and completes the ground via the metal dash panel above it. Although I don't recall which one, it's easy enough to check.
-Dave
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Old Jun 21st, 19, 11:15 AM
Big Dave Big Dave is offline
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Default Re: No cluster lights

Quote:
Originally Posted by cottonwood green View Post
I agree with Big Dave as the probable cause, but also check for a missing screw of several that attaches the instrument cluster assembly to the metal dash panel. The printed circuit on the back of the instrument cluster is grounded by one of those dash screws that passes through the circuit board and completes the ground via the metal dash panel above it. Although I don't recall which one, it's easy enough to check.
-Dave
When you pull the instrument panel to look at the back it has a printed ground symbol on the thick film circuit.

Big Dave
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