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| | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Sandra,
An excellent question.
Many of my restored Suburban's lights behave as you describe (especially the three rear lamps). We stripped and painted all sheet metal. The epoxy primer and urethane finish-coat is probably resulting in very poor grounds.
I have excellent original ground straps (and a few additional ground straps) and they all have excellent/clean connection-points.
I have been neglectful in fixing this dangerous situation. The annual inspection/inspector lets me get by with the very dim and sometimes erratic rear lights/lamps.
I plan to use a small diameter metal-brush drill bit to clean out sheet metal screw holes. After I get bare metal, I'll use a conductive anti-oxidant grease to allow conductivity but prevent rust.
Some holes are not accessible to a drill. I'll probably run an unsightly ground lead to a screw on those lamps/lights.
I'll test the quality of grounds with a continuity tester.
I'll do the wire drill-bit/brush in screw holes before I install sheet metal on the two trucks we are restoring. | | |
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