Navistar #1661281C91 5315Y101 has dual Metri-Pack connectors-one on either side of the lamp 5316Y101 uses #9469 jumper harness 5315Y101 uses #9470 main harness Dual optic acrylic lens Permastat body provides impact resistance Navistar #1661282C91 RH lamp popular replacement for GM/IH OE #56139474, #15565732 Combination stop, tail, turn, back-up and reflex reflector