TM 9-2320-361-10 1-34. LIGHTING SYSTEM OPERATION The lighting system of all M44A2 series vehicles consists of the following major components: REAR COMPOSITE LlGHT — Functions as combination taillight, stoplight, blackout taillight, blackout stoplight, and turn signal. LIGHT SWITCH — Controls vehicle lighting system. FRONT COMPOSITE LIGHT — Functions as combination marker light, blackout marker light, and turn signal, SERVlCE HEADLIGHT — Provides high beam and low beam lighting. BLACKOUT HEADLIGHT — Functions as headlight for blackout operations. BATTERIES — lighting system. Send electrical current to light switch for operation of 1-27 (1-28 blank)