TM 9-2320-209-34-2-1 7-11. VAN MAIN WIRING HARNESS REMOVAL AND REPLACEMENT. TOOLS : No special tools required SUPPLIES : Tags PERSONNEL: One EQUIPMENT CONDITION : Truck parked, engine off, handbrake set. a. Preliminary Procedures. (1) Disconnect battery ground cable. Refer to TM 9-2320-209-20. (2) Disconnect all van body external power sources. Refer to TM 9-2320-209-10. (3) Remove all 115-volt dome light fixtures. Refer to TM 9-2320-209-20. (4) Remove ceiling panels and insulation. Refer to Part 2, para 17-41. (5) Remove front access panel. Refer to Part 2, para 17-41. b. Removal. FRAME 1 1. Takeout four screws (l). Take off circuit breaker box cover (2). 2. Take out two screws (3). Takeoff switch cover (4). GO TO FRAME 2 7-36