
Tow Doctor Trailer Test Unit by HopkinsTrailer Wiring Tester allows one person to check trailer is wired properly.
Trailer Tester tests that all trailer functions are working correctly.
Our product pages show total cost, no add-ons at checkout. Ground orders ship free, some Freight orders also ship at no cost to you.
| Info about your RV Product |
| Tow Doctor Trailer Test Unit by Hopkins allows for you to individually test that your trailer is wired correctly and that all functions are working properly. Wire testers are used to help make sure you will be safe when towing your vehicle or trailer. They also help you narrow down where there might be a problem in the wiring. Adapts to 4-wire flat, 6-pole round, or 7-way RV blade. |
 | Allows for one person to be able to check if trailer is wired properly and all functions are working. |
 | Adapts to 4-Wire Flat, 6-Pole Round, or 7 RV Blade |
 | Can be used with any 12-volt battery |
 | Includes battery terminal clips |
 | Tests left turn, tail, brake, backup lights, electric brakes and auxiliary power |
 | Trailer lights illuminate and LED lights on the tester to show function operation |
 | Amperage meter shows actual amp draw |
 | For electric brakes, magnets are activated to determine correct operation |
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| We Deliver To: | 48 Continental US Only |
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Serving the Automotive Industry with innovative products since 1953. The company slogan "Image of Difference™" is not just a nice sounding slogan. It describes a business philosophy that has been the cornerstone of business for almost a half century. Innovative Hopkins products have redefined time after time what is expected and gone beyond the ordinary. From establishing a standard in headlamp aim; providing safer vehicles on the road, to introducing the Hoppy, Ice Scraper-in-a-Mitt. Hoppy is known for INNOVATION. |
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