I used the factory sender with my fuel gauge. If memory serves me it's 10-73 ohms auto meter has one listed for Chrysler. The printed board is no longer needed. There should be a wire going to the plug in for the board for dash lights.
I think the wires for the ammeter come off the alternator circuit, and would only show voltage if the alternator is operating. Not 100% sure about that maybe someone else will chime in on that
