Fuel gauge wiring question

Johnny Dart said

I would get it back to the way Ma Mopar designed it first, before improving it into a failure.

On another note. There is a ground strap from the sending unit to fuel line that is often missing. Make sure it is installed, and grounding correctly. These are often missing, and the reason the gas gauge is no worky.

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Those vibrating point IVRs are 50 years old. They fail open and closed. Upgrade to better solid state. Nice electronics project that's about $10

Just because mopar designed it, doesn't mean it was all designed great. That ammeter setup isnt that great. Better off bypassing that firehazard.

Some stuff is better than the way the factory designed it 50 years ago.