TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 428 of 890
REFERENCE INFORMATION None of the following instruments and accessories should work when the rotary switch is in the STOP position: Volts gauge Wait-to-start lamp Temperature gauge oil pressure gauge Fuel gauge Windshield wiper/washer Brake warning lamp If any of the instruments and accessories work when the rotary switch is in the RUN position, then power is available and the circuit breaker is OK. TM 9-2320-280-20-1 INSTRUMENTS CIRCUIT NOTE The wait-to-start lamp is not an accurate indication of glowplug operation. Make sure the glowplugs are operating property BEFORE you check out the light. Go to the Glowplug Tests, page 2-303. Return here if the light still doesn't operate property. The wait-t-start lamp should come on when the engine is below 120°F (49° C) and the rotary switch is first turned to the RUN position. 2-321