Hopkins Sae J1128 Wiring Diagram Recommended trailer wiring for 7-way with only 5 wires Etrailer wires Recommended Trailer Wiring for 7-Way with Only 5 Wires | etrailer.com Recommended Trailer Wiring for 7-Way with Only 5 Wires | etrailer.com Check Details ← Hopkins 7 Pole Wiring Diagram Hopkins Towing Solutions Wiring Diagram → Share with friends Link copied