7-Way Round to 4-Way Flat Pin Adapter w/LED Testing Light and Secure Tab For Trailer Tow Hitch & Redline Tailgate LED

OPT7 7-Pin to 4-Pin Trailer Adapter with LED Tester – Secure Fit, Weatherproof PlugConvert your vehicle’s 7-way blade connection to a 4-way flat trailer plug while testing your trailer’s lighting circuits. This 2-in-1 adapter is ideal for trucks, campers, and towing setups needing quick diagnostics and a tight, secure fit. 2-in-1 Adapter + LED TesterInstantly check connection status with built-in LED indicators—know when your trailer lights or OPT7 products are properly connected and functioning. Secure, Weatherproof DesignIncludes a 7-pin dust cover and sealed construction with rust-resistant brass prongs and cap, keeping your plug protected in all weather conditions. Resilient Retainer Fins for Tight FitNo more loose connections. This adapter’s finned design ensures a snug fit with any OEM 7-pin plug. Say goodbye to flickering tail lights. Built for Any RigDesigned to handle trailers, campers, and towing accessories without failure—even on rough roads and long hauls. W