BLACKOUT STOPLIGHT CIRCUIT. (Cont) - TM-9-2350-238-20-10278

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Make sure MASTER switch is OFF before repairing electrical

circuits. Failure to observe this warning could result in injury to

personnel.

Step 3.

To access bulkhead disconnect, remove driver's seat, refer to page 2-952;

and remove driver's compartment aft cowl, refer to page 2-928. Disconnect

wiring harness. Place red probe in pin E (lead 23). Ground black probe.

Set MASTER switch ON. Turn vehicular light switch to BO STOP. Apply

brakes. If multimeter indicates about 24 volts, repair lead 23 between

bulkhead disconnect and right stoplight-taillight. Refer to page 2-371. If

multimeter indicates no voltage, go to step 4. Set MASTER switch OFF.

Turn vehicular light switch OFF. Connect wiring harness.

Step 4.

Place red probe on pin A. Place black probe on pin F. Turn vehicular light

switch to BO STOP. If multimeter indicates 0 ohms, go to step 5. If

multimeter indicates infinity, replace vehicular light switch. Refer to page

2-566. Connect connector to vehicular light switch.

2-252