Trailers need a signal harness running from the towing vehicle to carry stop, turn, and tail light commands. This 4-flat connector harness terminates on the trailer end and includes both the trailer-side plug and the RV-side connector.

Built to SAE specification J1128, the 18-gauge bonded wires are labeled directly on each wire so you know which signal each carries. A ground wire runs the full length for a complete circuit, and each conductor handles 7.5 amps safely.

• Connector type: 4-flat, trailer-end termination
• Wire gauge: 18-gauge bonded
• Function labels: Printed directly on wires
• Capacity: 7.5 amps per circuit maximum