Rallye Gauges Oil Pressure, Fuel, Voltage, Temperature drop when driving

[Mopartwice]

I have a 70 cuda with 71-74 rallye gauges. When driving the gauges often drop, sometimes all the way to zero. When slowing down or stopping they return to "true" levels. Is this a voltage regulator issue, gauge regulator, grounding issue, etc?

Looking for areas to explore.

don

 

[Steve340]

You will get more responses if you posted this in the correct section.
If all your gauges drop it is something they all have in common either the gauge regulator or ground. Poor connection on the power side is also a place to start.

 

[moparleo]

Welcome to the welcome section.
https://www.rt-eng.com/rte/images/e/e5/LimiterManualIVR3_D.pdf
Vintage Chrysler electrical repairs and updates