Trailers require electrical hook-ups that make towing safer for you and others on the road. In fact, while each state has its own laws and regulations governing everything from size limits to weight restrictions, the one thing they all have in common is that your trailer must be wired for tail lights, brake lights and turn signals. This is accomplished by connecting your trailer to your vehicle’s electric system. Unfortunately, not all trailer electrical wiring is compatible with the wires of your car, truck, van or SUV. Fortunately, REESE® Towpower manufactures a full line of trailer electrical components for everything you need to get your trailer lights up and running for safe towing. We manufacture T-Connectors, wiring converters, wiring connectors, adapters, brake controls and more to make towing safe for you and the drivers around you. Best of all, our products install quickly and easily with simple do-it-yourself instructions.

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  • Connector 4-Flat Insta Plug with LED Circuit Tester

    Connector 4-Flat Insta Plug with LED Circuit TesterConnector 4-Flat Insta Plug with LED Circuit TesterConnector 4-Flat Insta Plug with LED Circuit Tester

    Part Number: 78115

    Product Description
    The REESE Towpower Insta-Plug, 4 wire flat with led circuit tester, trailer end, is designed to instantly add or replace a 4 flat connector on your trailer's wiring system. The unit also features a built-in LED circuit tester that continually monitors the system.


    • Instantly add or replace a 4-Flat connector on your trailers wiring system
    • Featuring a built in circuit tester
    • Easy to use
    • Corrosion resistant and tin plated contacts for long life
    • No splicing


    Looking for more product details? Download a brochure or application guide. Review our frequently asked questions or check out our helpful videos.

    Cequent Consumer Products offers a REESE Limited and a REESE Limited Lifetime warranty on some products. See our product warranty page for specific details.

    Cequent Consumer Products are distributed through our network of fine retail partners. Available in the United States and Canada you will find our top selling brands in stores and on the web. See our Network of Fine Retail Partners.

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