TM 10-3930-641-20
ELECTRICAL SYSTEMS TROUBLESHOOTING (CONT)
PROBLEM NO. 25 (CONT)
(Sheet 6 of 7)
25 c. The HEAD LAMPS obtain their power from a 15 amp automatic-resetting circuit breaker rather than from a fuse. Current flo ws from the cir-
cuit breaker, through the switch, and through the lamps to ground. If only one lamp is out, problem is in the lamp or interconnecting wiring.
HEAD LIGHT CIRCUIT
25 d. When the FLOOD LIGHT switch is closed, current flows from fuse 2, through all four (front and rear) flood lamps to ground. If only the front
work or only the rear work, switch and fuse are good. See diagram below.
2-131