An electric light has a light bulb within a housing. The housing has generally horizontal exterior and interior surfaces and a periphery. The exterior surface has a translucent plate. A gripper, constructed of a pair of similarly configured arms, supports the housing. Each arm has a downwardly extending finger and an upwardly extending handle. Each arm has a laterally extending projection with a pivot pin pivotably coupling arms. A spring encompasses the pivot pin and contacts the handles. A coupling assembly couples the housing to the gripper which is removably supported on a recipient surface of a trailing vehicle. The electric light is adjustably positioned with respect to the recipient surface of the trailing vehicle.