sending unit way off

67Dart273 said
^^The unit they show on their website IS NOT OEM Chrysler^^ It is some sort of aftermarket unit

OP............if you expect help on here you need to step it up and give up some meaningful information. Anybody can sit here and guess.

What year make and model car are you working on?

What have you done for tests?

So far with your post, it could be anything anywhere in the car insofar as the system that operates the gauge(s)