Gauges go to full tilt!?!

The limiter I was messing with had the case ground tab. That tab has to be clean for a good ground.
Looking at the circuit it looks like if the tank sender is screwy the gauges could peg. If that is the case the new limiter might not do anything.
Maybe take the limiter out, ground the tab...but you will have to know which terminal to put the bat. voltage to to test the output voltage.
8.2 is an odd # The 'bad ones' I had must have been blown and would assume the the output was zero.
I never test mine out of the car.
Swapped a few used ones in and they were all junk, luckily found one at a Dodge dealer not far away.

Good Luck!