TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).h. LIGHTS (continued).(8) PARKING BRAKE INDICATOR LIGHT FAILS TOOPERATE. Parking brake is set (continued).CONTINUED FROM CD. 1. Reconnect wires 509E to parking brakewarning switch assembly.2. Disconnect harness 12268104 wire 509Efrom harness 12260287 wire 509E behinddriver’s instrument panel.3. Place red lead of multimeter on harness12268104 wire 509E connector socket andground black lead.4. Turn MASTER switch ON (refer to TM 9-2350-287-10)5. Check for 24 ± 3 vdc.6. Turn MASTER switch OFF (refer to TM 9-2350-287-10)Is voltage indicated?Repair wire 509E or replace harness12260287 (para 7-56). Verify problemis solved.E. 1. Connect wire harness 12268104 wire509Eto wire harness 12260287 wire 509E.2. Disconnect wire 450 of harness 12268104from output circuit breaker no. 2 ofpanel no. 1.3. Place red lead of multimeter in output ofcircuit breaker no. 2 and ground black lead.4. Turn MASTER switch ON (refer to TM 9-2350-287-10).5. Check for 24 ± vdc.Continued on next page2-162
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