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Q: speedometer works, but the the the tachometer, fuel guage, battery and temp dont on 1992 Volkswagen Cabriolet

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
fuse has been replaced. I'm lost.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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Symptom: Fuel and temperature gauges are both inoperative or inaccurate.
System: Body/Chassis Electrical
Problem: The voltage stabilizer in the instrument cluster malfunctions.

Test & Fix: Test the wires at the sensors for voltage. The reference voltage from the cluster, with ignition on, should be 10 volts. If it is more than 0.25 volts higher or lower, the voltage stabilizer attached to the rear of the instrument cluster should be tested for battery voltage and ground inputs and a steady 10 volts output. If power and ground are good, and the output is incorrect, replace the voltage stabilizer.

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