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Replacement Tow Doctor Tester

Replacement Tow Doctor Tester

Item # 4010509028
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Our Price: $226.70
You Save: $173.29
Accessories and Parts
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Shipping Weight: 1.62 lbs
In Stock
Replacement Tow Doctor Tester Testers 4010509028
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Call 800-298-8924 to order Hopkins accessories and parts part number 4010509028 or order online at etrailer.com. Free expert support on all Hopkins products. Guaranteed Lowest Price and Fastest Shipping for Replacement Tow Doctor Tester. Accessories and Parts reviews from real customers.
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  • Reviews (2)
  • Q & A (1)
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  • Why etrailer?

Hopkins Accessories and Parts - 4010509028

  • Wiring
  • Testers
  • Hopkins

  • Replacement tester for Hopkins Tow Doctor Trailer End Test Unit (HM50928)
  • Allows one person to check that trailer wiring and functions are working correctly
  • Tests all trailer functions: right turn, left turn, brake, tail, backup lights; electric brakes and auxiliary power
  • Trailer lights illuminate and LED bulbs light on the tester to show function operation
  • Adapts to 4-Flat, 6-Pole Round, or 7-Way RV Blade
  • Includes battery terminal clips
  • Amperage meter shows actual amp draw
  • For use with any 12-Volt battery
  • For electric brakes, magnets are activated to determine correct operation

4010509028 Hopkins Replacement Tow Doctor Trailer End Tester

4010509028 Replacement Tow Doctor Tester

California residents: click here

Customer Reviews

Replacement Tow Doctor Tester - 4010509028

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

- 4010509028

Great product and as always excellent service from etrailer. 660177

- 4010509028



Ask the Experts about this Hopkins Accessories and Parts

  • Electric Trailer Brake Light Does Not Light Up When Testing with a Hopkins Tow Doctor Tester
    The replacement unit, # 4010509028 is a replacement for Tow Doctor part # HM50928. It looks like the Tow Doctor version you ordered is # HM50918. The difference is the HM50928 has more features. To test the brake controller output someone will need to sit in the truck and apply the manual override so that it is sending power back to the trailer connector. Otherwise, what will happen is what you are seeing, a slight flicker of light. That is the brake controller checking to see if a trailer...
    view full answer...

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Info for this part was:

Expert Research:
Michael H
Updated by:
Alexander C

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