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Trailer Doctor™ Trailer Tester Kit

Hopkins (Part Number:LM-50928)

Your Price: $451.15
List Price: $535.95
You Save: 16% ($84.80)
Availability: In Stock!
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Designed so that one person can make sure a trailer has been wired properly and all functions are working. The unit easily determines correct or miswired connections, burned-out lamps or trailer shorts to ground. Works only with 12 volt negative ground systems.


    Installation InstructionsCLICK HERE


    • Tests all trailer functions: Left Turn, Brake, Tail, Backup, Electric Brakes and Auxiliary power
    • Trailer lights illuminate and L.E.D. lights on the tester to show function operation
    • Adapts to 4-Wire flat, 6-Round Pole or 7-Way RV Flat Pin
    • Equipped with a amperage meter that shows actual amp draw. For electric brakes, magnets are activated to determine correct operation


    • Main Test Unit, 4-Flat tester, 6 Round adapter (center pin electric brakes), 7-Way RV Adapter and storage case

    Not Included:

    Hopkins Manufacturing

    From our humble beginnings more than 5 decades ago, where we pioneered advances in head light aimers for automotive body repair shops, Hopkins has grown into a market leader in each of the 6 businesses we operate. Our leadership positions are a reflection of the mission that has guided our company for the past 56 exceed customer expectations in everything that we do. This goal has not only delivered growth for Hopkins, but growth for our customers as well.

    Today Hopkins sells automotive aftermarket products in more than 75,000 distributors and retailers across the globe. One key to our market leading positions is product leadership. To us, product leadership goes beyond the physical product to a deeper understanding of the end-users' needs. By focusing on their use-experience, our product design teams create innovation solutions to real consumer problems...resulting in products that deliver higher levels of satisfaction.

    The above information has been provided by the Manufacturer, and we cannot guarantee the accuracy thereof or endorse the opinions expressed.

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