TM 10-3930-659-20 6-26. REAR BLACKOUT LIGHT MAINTENANCE. This Task Covers: a.   Lamp Replacement c. Installation b.   Removal Initial Setup: Equipment Conditions: Materials/Parts: • Battery disconnect switch In OFF position (see •   Marker tags (Item 33, Appendix C) TM 10-3930-659-10). • Radiator grille door opened  (see TM 10-3930- References: 659-10) •   TM 10-3930-659-10 Tools/Test Equipment: • General mechanic's tool kit (Item 44, Appendix F) a. LAMP REPLACEMENT NOTE Lamps of left and right rear blackout lights are replaced the same way.  Left rear blackout light Is illustrated. 1. Loosen six screws (2) and remove door (3) from housing (6). 2. If damaged, remove preformed packing (4) and discard. 3. Remove two lamps (5) from sockets (1) by pushing lamps in and turning counterclockwise. TA707802 6-116