TM 9-2350-247-20-1BLACKOUT STOPLIGHT DOES NOT WORK—Continued 0039 008Y1. Connect circuits 75 and 75A on stoplight switch.2. Remove circuit 22 plug (1) from jack on left taillight, or circuit 23plug (1) from jack on right taillight.3. Turn main light selector switch lever on light switch to BOMARKER.4. Measure voltage between circuit 22 (left) plug (1) or circuit 23(right) plug (1) and ground with both steering levers locked inparking brake position. Reading should be less than 17 volts.5. Is reading correct?YESNO8YN1. Install circuit plugs 22 (1) and 23 (1)on left and right taillights.2. Replace service stop or BO stoplightbulb (WP 0278 00).3. Verify no faults found.9Y1. Partially remove instrument panel (WP 0256 00).2. Disconnect wiring harness connector from light select switch.3. Place light panel switches in BO MARKER and PANEL BRTpositions (see your -10).4. Measure resistance between pins (1) (F, A),(F, B), and (F, E).Multimeter should show continuity.5. Measure resistance between pins (1) (F, C),(F, D), (F, J),(F, H),(F,K), (F, L),(F, M), and (F, N). Multimeter should show infinity.6. Move auxiliary switch to PARK (see your -10). Measureresistance between pins (1) F and L. Multimeter should showinfinity.7. Measure resistance between pins (1) K and N. Multimeter shouldshow continuity.8. Are readings correct?YESNO9YN1. Replace light switch (WP 0262 00).2. Verify no faults found.0039 00-5
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