Power Products EL15336 dual-pole plug with integrated retention spring — direct aftermarket replacement for Phillips 15-336, Tectran 670-21SG, and Velvac 593116. Mates with the Phillips 15-326 (or equivalent) dual-pole socket to carry the high-current battery feed from a tractor to a trailer-mounted liftgate motor and battery pack. The recessed positive pin reaches contact after the ground pin, reducing arc and short risk during connection, and the reinforced zinc die-cast housing is sized strictly for 4-gauge cable termination. Specifications Manufacturer Power Products Part Number EL15336 Part Type Dual-Pole Plug with Spring (Liftgate / Auxiliary Battery) Housing Material Zinc Die-Cast (Reinforced) Wire Gauge 4-gauge Grounding Sequence Recessed positive pin (ground makes first contact) Mating Socket Phillips 15-326 / Power Products EL15326 Cross References This plug replaces or is equivalent to the following part numbers: Phillips Industries: 15-336 Tectran: 670-21SG, 38036 Velvac: 593116 Haldex: BE23202 Applications This dual-pole plug is used wherever a high-amperage tractor-to-trailer battery feed is required: Trailer liftgate battery and motor power supply Heavy-duty auxiliary battery / accessory power between tractor and trailer Replacement for damaged, melted, or corroded dual-pole plugs on existing liftgate harnesses Mates with Phillips 15-326 dual-pole socket — see the matching Phillips 15-326 dual-pole socket. Use 4-gauge cable; do not undersize. Always disconnect battery power before servicing the connector. Recessed positive pin must remain unobstructed for safe make/break sequence.