Join Date: Feb 2002
Location: N.W. Washington
is the center screw in the gauge panel tight, and if it is, is the ground strap there (behind the screw hole, attached to the panel) this is where your gauge panel is grounded. and make sure it has a good contact to the metal part of the dash. if the ground strap is not making contact, it will do as you describe. but, the test light lighting when you touch the metal part of the gauges is strange. i'm assuming you mean you ground one side, and when you touch the metal on the gauges it lights. is it brite? sounds like the gauges aren't properly grounded, and possibly the printed circuit has gone to ground, or in other words is touching, the metal on the gauges. if it was grounded well, and there is voltage applied to the metal, it should pop a fuse. just keep checking for bad spots in contact with metal on the printed circuit, and make sure the dash panel is properly grounded. if all you have is a test light (an ohm/volt meter would be better) put one end of the light to a known hot, then try touching the back of the gauges (metal part). it should light up if grounded. but first look into why there is voltage on the back of the gauges. hope this ramble made some sense. good luck, be patient, you'll get it
1968 rs with an old school 354" SB2.2 pump gas motor.
Repetition does not transform a lie into a truth.
Franklin D. Roosevelt