CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONSTM 9-2350-256-202-19 ELECTRICAL TROUBLESHOOTING-ContinuedRIGGER'S LIGHTS AND FRONT SIGNAL LIGHT--ContinuedWARNINGRemove all jewelry such as rings, dog tags,bracelets, etc. If jewelry contacts a metalsurface a direct short may result in instantheating of tools, damage to equipment, andinjury or death to personnel.ALoosen four screws (1) and remove cover (2). Removebulb (3). Place red lead of multimeter in socket andblack lead to ground. Turn MASTER switch on,UNLOCK and turn main lighting switch to STOPLIGHTposition, rigger's B.O. SELECTOR to SERVICEposition, and check for voltage. Turn MASTER andB.O. SELECTOR switches OFF. If voltage is present,replace lamp (see paragraph 6- 27). If voltage is notpresent, go to step B.BInstall bulb (3), cover (2), and tighten four screws (1).Disconnect wire 17 from failed rigger's service light.Place red lead of multimeter in wire 17 and black lead toground. Turn MASTER switch on, UNLOCK and turnmain lighting switch to STOP LIGHT position, rigger'sB.O. SELECTOR to SERVICE position, and check forvoltage. Turn MASTER, main lighting, and rigger's B.O.SELECTOR switches OFF. If voltage is present,replace rigger's service light assembly (see paragraph 6-27). If voltage is not present, go to step C.2-320
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