Change 1          2-821 TM 9-2320-365-20-1 Install plastic cable ties as required. NOTE VOLTAGE TEST (Cont) (11)  Position master power switch to off         (TM 9-2320-365-10). (12)  Connect connector P52R to connector         J52. WARNING Remove rings, bracelets, watches, necklaces, and any other jewelry before working around vehicle.  Jewelry can catch on equipment and cause injury or short across electrical circuits and cause severe burns or electrical shock. CAUTION Use care when testing electrical connectors. Do not damage connector pins or sockets with multimeter probes.  Failure to comply may result in damage to equipment. NOTE Inspect connector pins/sockets for damage, corrosion, and serviceability.  Check that connector pins are not pushed back and are capable of making good contact. VOLTAGE TEST   (1)  Disconnect connector P52R from         connector J52.   (2)  Set multimeter to volts DC.   (3)  Connect positive (+) probe of multimeter         to connector P52R pin 6.   (4)  Connect negative (-) probe of multimeter         to ground.   (5)  Position master power switch to on         (TM 9-2320-365-10).   (6)  Position main light switch to SER DRIVE         (TM 9-2320-365-10).   (7)  Apply brakes and note reading on         multimeter.   (8)  If 12 VDC is not present, repair wire 22C         from connector P51 socket 13 to         connector P52R pin 6 (para 2-40) or         replace rear lights cable assembly         (para 7-75).   (9)  If 12 VDC is present, replace rear         intervehicular 12 VDC (7 pin) cable         (para 7-78). (10)  Position main light switch to OFF         (TM 9-2320-365-10). NOTE Remove plastic cable ties as required.