Fuel Gauge
Disconnect fuel sending unit connector wire in luggage compartment, cargo space or at tank unit. Connect a 12-volt 3.4-watt bulb to harness side of connector, between power terminal and ground. Turn ignition switch to "ON" position. Ensure test bulb flashes on and off and fuel gauge operates. See Fig 1 .
Connect test light between connector and ground. Turn ignition switch to "ON" position. Ensure test light flashes (or stays on) and fuel gauge needle deflects.
CAUTION:
Gauge coils can be damaged if wire is grounded too long. Perform test as quickly as possible.