TM 10-3930-659-20 6-23. BLACKOUT DRIVING 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 •   One lockwasher References: •   TM 10-3930-659-10 Tools/Test Equipment: • General mechanic's tool kit (Item 44, Appendix F) a. LAMP REPLACEMENT 1. Loosen two screws (5) and remove door (1) from housing (4). 2. Remove lamp (2) from socket (3) by pushing lamp In and turning counterclockwise. 3. Install lamp (2) In socket (3) by pushing lamp in and turning clockwise. 4 Install door (1) on housing (4) and tighten two screws (5). 6-107