CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS TM 9-2350-256-202-19 ELECTRICAL TROUBLESHOOTING-ContinuedDRIVER'S PERISCOPE-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.GReconnect wire 999 to B.O. RECEIVER switch.Disconnect wire 516 from main switch panel side ofB.O. RECEIVER switch. Place red lead ofmultimeter in wire 516 and black lead to ground. TurnMASTER switch on and check for voltage. TurnMASTER switch OFF. If voltage is present, replaceB.O. RECEIVER switch (see paragraph 6-15). Ifvoltage is not present, troubleshoot dome light circuit.2-252
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