Re: I really hate electrical gremlins... gauge lights mystery
Just a tidbit more: If the previous owner did something wild like paint the metal case of the instrument cluster, or if the metal case of the instrument cluster is rusty, you could have just the screw threads making poor contact to ground (at those particular points where the screws attach the ground traces on the printed circuit to the instrument cluster). Or painted screws could cause that problem because they don't make good electrical contact.
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