Weighing options to fix my gas gauge

[MadScientistMat]

My '66 Dart has a gas gauge that seems completely dead. I've narrowed it down to somewhere between the negative terminal of the gauge and the sender wire - either the cluster circuit board or the connector. So I can see four options:

1. Snip the wire, splice on a ring terminal, and bolt it to the gauge. Main concern is this could make better fixes more difficult and the wire is a bit brittle.

2. I have two spare circuit boards. One seems to have loose pins on its connectors, but I could swap in the other one. Just not sure how reliable it will be after 60 years and disconnecting the pins.

3. New circuit board - in this case I would make my own with more modern connectors and maybe a built in solid state voltage limiter.

4. Swap to completely non factory gauges.

What would you do on your own project? How much trouble are used dash circuit boards likely to be?

 

[mvh]

I believe the gas gauge is a 5V gauge fed by a voltage limiter (my experience is with 67 or newer, so I/m not positive). I would start by replacing the voltage limiter. For instance, in 67 rally dashes , the voltage limiter is part of the gas gauge, and is the most common point of failure. Look for it in the wiring diagram.

 

[MadScientistMat]

No, the voltage limiter is working. Temperature gauge works like normal and shorting the negative terminal of the fuel gauge to ground pegs the gauge.