Four-way Y-splitter plug for trailer lights.

4-Way Y-Splitter Harness Plug Play Adapter for Tailgate Light Bar Trailer Towing

Trailer Wire Extension 4-Way 4 Pin Plug, 4 Wire Size: 59 inch with Dust Cover

4-Way Trailer Wiring Harness 18AWG 6.56ft 4-Pin Trailer Connector Size: 6.56ft

Waterproof 7 Pin Trailer Plug, 7 Way Round RV-Style Connector and Wiring Harness

Four-way Y-splitter plug for trailer lights.

7 Way Trailer Plug Socket Extension Cable 7 Blade Trailer Wiring Conne

7 Way Trailer Plug Socket Extension Cable - 7 Blade Trailer Wiring C Size: 3FT