TM 9-2320-209-20-3-1 7-23. BLACKOUT DRIVE LIGHT SEALED BEAM UNIT REMOVAL AND REPLACEMENT. TOOLS: Flat-tip screwdriver 6-inch long-nose pliers SUPPLIES: None PERSONNEL: One EQUIPMENT CONDITION: Truck parked, engine off, handbrake set, light switch in OFF position. a. Removal. FRAME 1 I 1. Using screwdriver, unscrew and take out three screws (1). 2. Hold light door (2) with sealed beam (3) away from light body (4). 3. Unplug two electrical leads (5 and 6). 4. Take out sealed beam (3) and light door (2). GO TO FRAME 2 7-113