Unplug your vehicles factory wiring harness and plug in a hopkins vehicle wiring kit. Thats how easy trailer wiring is with a plug-in-simpler wiring kit featuring exact fit oem connectors for a perfect weather-tight fit these kits provide a 4 wire flat connector for your trailer and all the necessary mounting accessories.Features. Utilizes oem connectors for enhanced fit and weatherproofing.. Corrosion resistant terminals.. Includes dust cover cable ties and grease packet.. Plug-in simple wiring kit - No cutting no splicing saves time.. Fits for various makes and models.