Yes, exactly what Crackedback states. You can remove the amp gauge entirely. It's as simple as bolting the two terminal ends together and wrapping them in electrical tape. As eluded to by others here, there is a significant issue with the bulkhead connectors on Mopars. The connections can deteriorate which leads to increased resistance and potential overheating and fire among other issues.
You should consider cleaning the connectors up and packing those connections with dielectric grease part of some of the first maintenance you should do on an old Mopar anyway!
Using relays to power headlights and any other high amperage drawing accessory inside the cabin of the car and using an additional appropriately-sized, fused cable to bring power from the alternator directly to the starter relay/+ battery terminal goes a long way towards reducing the current flowing through the bulkhead connections.
It's not a complicated preventative measure once you understand how the current flows in the stock configuration versus the modified configuration.
Regarding the monitoring of your charging system. You don't need any gauges for it. You will know when you have a problem when your car won't start or is slow to crank over. Carry a set of jumper cables if you must, or call a towing service for a jump if your system ever fails. I figure if my system isn't charging by the time I notice the gauge, I'll be in the same boat anyway. Most likely, the car will begin to crank slowly before it goes completely dead anyway. At that point, I'll repair what ever went out in the first place.
