Need help please to Identify the problem

[72Z/28]

Test the signal at the attachment point on the dash with the speedo connector removed. If a signal is present, try to with the connector plugged in. If the speedo does not work then it's likely the gauge.

I am getting signal at the connector and voltage alternates between battery volts and zero on slow roll.

I am not sure if the gauge pointer should respond at slow roll or not.



I guess it is time to get new gauge cluster because the existing gauge cluster is very old, lights are not bright at all.

I found the two gauge cluster from classic dash and would like to get separate gauges for fuel,oil pressure, engine temp, battery voltage that I am going to mount on the center dash.

Classic Thunder Road Instrument Panels with AutoMeter Gauges 101670971

I guess If I go this route, I may need to order the Autometer wiring harness for the gauges