Its the external voltage regulator that fits into 3 slots on the back of the tracer board, with 3 legs. I think the later chryslers used the same VR tied a capacitor to them, also externally.
I cannot get either gage to spike by grounding the return side by the connector at the sensors OR by ground right at near the circular plug on the board. Makes no sense to me.
I'm thinking the 5v isn't making it to either gage, either at the tracer or circular connector point.
so I need to test the gage, alone, without any wiring....just post to post. Is there a resistance value?
Just found this: I guess I'll be doing this tomorrow!
