Instrument Panel, Gauges and Warning Indicators: Testing and Inspection

Gauge failures are often caused by defective wiring or grounds.

- The first step in locating trouble should be a thorough inspection of all wiring, terminals and printed circuits.

- If wiring is secured by clamps, check to see whether the insulation has been severed thereby grounding the wire.

- In the case of a fuel gauge installation, rust may cause failure by corrosion at the ground connection of the tank unit.