Check the wires that run along the mag side of the bulkhead. It's very common for these wires to get worn through in this area.
I tried to show you in red, the wires I'm talking about. The bad part is even if they look fine, it's best to remove the electrical tape, and visually inspect every inch of wire. I had mine worn through, and was experiencing similar problems a couple years ago. It didn't look bad untill I removed the tape.
Also........the gauge on the 03's is VERY DIM to begin with. So even if you find a broken wire and fix, the gauge will still light up poorly. But hopefully the sled should run better.
I name my quilts after first Lady's, and my comforters after fighter planes, and there ain't nothin more AMERICAN than takin a nap, in an Apache combat helicopter with Nancy ****in Reagan.