[Pepi]

Originally Posted by AdamIsAdam

When I grounded at the ribbon behind the rear seat, nothing happened. That's what's really odd. And I had a very good ground there.

Then you have to go up further to the next connection and try it. If there is one between where you did it and the gauge, other wise yes, ground out on the back side of the gauge. You said the back side of the gauge was an L shaped plug, can you unplug it and stick a wire in from the back and then plug it back in and ground the wire? I don't know how much room you have up there to work. Otherwise not plug the plug on completely and try to touch the metal tang with a pick or flat screwdriver with a wire attached to it and ground out, probably will need someone else to watch the gauge when you it that way since you'll be on your back trying to work behind the dash.