4 Pin 5 Wire Trailer Wiring Harness – 22FT Heavy-Duty for Reliable Taillight Connections

Upgrade your trailer’s lighting system with our 22-foot 4-pin flat trailer wiring harness, specially designed for rewiring taillights. This versatile wiring harness is compatible with both 12V and 120V systems, ensuring reliable connections for all your trailer lighting needs. The included circuit tester simplifies diagnostics, giving you peace of mind on every journey. With heavy-duty construction for enhanced durability, this wiring harness is built to withstand the rigors of outdoor use. The plug-and-play design makes installation straightforward—no specialized tools are required. Perfect for ensuring safety and visibility on the road.