Buyers products bulk tc1770p 7-way black plastic flat pin truck receptable – tc1770p the 7-way flat pin trailer connector from buyers products connects your trailer’s lights, brakes, turn signals and more. It plugs easily into your oem tow package wiring harness — no extra splicing needed. It features weather-resistant plastic housing and a spring-loaded door that keeps dirt and moisture out of the connector when it’s not in use. Order either the bolt-on version or the twist-lock version. features quick plug-and-play design means no cutting or splicing of wires. stays clean and corrosion-free with its spring-loaded door. weather-resistant plastic housing.