TM 9-2350-261-20-1
1.Turn MASTER SWITCH OFF (see your -10).
2. Remove engine harness plug (1) from front main
harness jack (2) at carrier bulkhead.
3. Turn MASTER SWITCH to ON.
4. Depress start switch and hold for test.
5. Measure voltage between front main harness jack (2)
socket H (3) and ground.
6. Does multimeter read less than 17 volts?
7.Turn MASTER SWITCH OFF (see your -10).
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Change 4