1. Tidy Up Your Trailer Wiring Harness7way copper blade molded into a heavyduty trailer plug, with 8 FT long trailer cord, provides a quick and simplified way for wires connection as well as keeping all your trailer wiring in order. 2. Easy Splicing with Junction BoxSolid trailer junction box with 7 colorcoded wires for convenient wiring. Strong junction boxes are waterproof and dust resistant to prolong the life of trailer cords. 3. Convenient 7 Way Trailer CordSturdy junction box with colorcoded 7poles that can be easily identified. The 7 way trailer cord is coated with robust rubberlike insulation, which gives you more convenience for wiring the turn light, brake signal lamp, reverse light, tail light, etc. There are some differences among different manufacturers, please check if it is suitable for your trailer. 4. Sturdy Construction and Flexible ConnectionThe 7way trailer cord wire adapts conductive copper wire. Soft and sturdy PVC housing ensures flexibility when connecting to your car. 4 open and 4 close rubber grommets for options based on your wiring needs.