50928 Tow Doctor™ Trailer Side Test Unit
Specifically designed so that one person can make sure a trailer has been wired properly and all functions are working. Plug the Tow Doctor™ into the trailer connector and the power cord into a battery source and cycle through the trailer lighting functions. Includes 7 Blade, 6 Round and 4 Flat test connectors and durable carrying case.
- Designed So One Person Can Test Functions
- Tests All Trailer Functions
- LED lights on the tester illuminate to show function operation
- Amperage meter shows actual amp draw
- Includes battery terminal clips. Can be used with any 12-Volt battery
- Saves Time And The Cost Of A Second Person
- 90 Day Warranty From The Date Of Original Purchase
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4.7
Out of 5.0
Overall Rating
96%
of customers that buyfrom this merchant give
them a 4 or 5-Star rating.
May 20, 2026 by Steven D. (LA, United States)
“Very pleased with my purchase”
May 19, 2026 by James L. (United States)
“I like the website, easy to order parts for my trailer. I’ll be using your site now. Glad I found it.”
May 18, 2026 by Giovanni D. (United States)
“Quick and easy I would definitely buy from you guys again”
