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64 dash lights won't go off

724 views 2 replies 2 participants last post by  chevy28356 
This'll be a real PITA to check, but...

The headlight switch, wiper switch, cig lighter and gauge cluster assy. are grounded by 2 tin stampings that are trapped between the switches and the dash housing plastic. The driver's side (headlight & wiper) achieve ground through the left-most upper bezel mounting screw. The cig lighter (and cluster again) achieve ground through the radio chassis & rear radio support mount.

It's a pretty weak design - the dash screw loosens/rusts and you lose that ground, put in an aftermarket radio (cutting the dash & altering the tin stamping) and you lose that ground.

Run a dedicated ground wire (18ga) using some ring terminals from one of the instrument cluster to bezel screws (1/4" hex heads - on the metal cluster) to the body sheetmetal above the E-brake. This usually solves a myriad of flaky dash problems. Also tighten all the dash bezel holddown screws, and headlight/wiper switch attaching nuts.
 
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