TM 5-3805-263-14&P-1LightSwitchess1.Main Switch-Five positions.B.O. MARKER. Blackout tail lamps lit. Stop lamp willlight when brakes are applied. Mechanical lock levermust be held in UNLOCK to move main switch lever tothis position.B.O. DRIVE. Blackout tail lamps and blackout drivinglamps lit, and blackout stop lamp will light when brakesare applied. Mechanical lock lever must be held inUNLOCK to move main switch lever to this position.OFF. All lamps turn off. Auxiliary switch will not work.Stop lamps will not light when brake is applied.Floodlights will not light. Horn and backup alarm will notsound.STOPLIGHT. Service stoplamps light when brake isapplied. Mechanical lock held in UNLOCK position tomove main switch to this position.SER. DRIVE. Tail lamps lit, stop lamps light when brakeis applied. Flood (working) lights may be turned on atoperator’s console. Hold mechanical lock in UNLOCKposition to move main switch to this position.2.Auxiliary Switch--Four positions.NOTEAuxiliary switch will not operate if mainswitch is in OFF position.PANEL BRT. Panel lamps brightly lit.DIM. Panel lamps dimly lit.OFF. Service tail lamps lit (main switch in SER DRIVE)and panel lamps dimly lit. Blackout tail lamps lit (mainswitch in B.O. DRIVE or B.O. MARKER).PARK. Service tail lamps lit (main switch in SER.DRIVE position) and gage lights dimly lit. Blackout taillamps lit (Main switch in B.O. DRIVE or B.O. MARKERposition).3.Mechanical LockLOCK. Locks out all main switch positions except B.O.MARKER.UNLOCKED. Main switch may be placed in B.O.DRIVE, STOP LIGHT, or SER. DRIVE.To operate, hold lever in UNLOCK and move mainswitch to desired position.17
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