CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONSTM 9-2350-256-202-19 ELECTRICAL TROUBLESHOOTING-ContinuedELECTRIC IN-TANK FUEL PUMP-ContinuedWARNINGRemove all jewelry such as rings, dogtags, bracelets, etc. If jewelry contacts ametal surface a direct short may result ininstant heating of tools, damage toequipment, and injury or death topersonnel.KReconnect wire 10-419 to Y-connector of switch panel,radio, and bilge pump to bulkhead wiring harness tomain switch panel. Install main switch panel (9), flatwasher (8), ground lead (7), three lockwashers (6), andthree screws (5) to mounting bracket. Open air inletdoors (TM 9-2350-256-10). Disconnect wire 48 pin Afrom bulkhead to master relay wiring harness. Placered multimeter lead in socket and black lead to ground.Turn MASTER switch on and check for voltage. Ifvoltage is present, repair or replace switch panel, radio,and bilge pump to bulkhead wiring harness (seeparagraph 6-53). If voltage is not present,troubleshoot master relay circuit (see paragraph 2-19,master relay fails to operate).2-94
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