When you re ready to hit the open road for fun and adventure trust the Hopkins Towing Solutions 7 Blade Plastic Trailer Side Connector 48505. A 7 Blade connector is typically used with large trailers (RV and industrial) and is the most popular tow package connector on new tow vehicles. This connector provides the following functions: left/right turn taillight ground auxiliary electric brake and reverse. It can help make your journey go smoother simpler and more rewarding through innovation and value. This 7-pole trailer plug is impact and corrosion-resistant with an easy-pull grip design that holds up over time. It features rear grommet/strain relief for weatherproofing.