Tests Trailer Circuits from the Tow Vehicle Quickly and Easily on Most Light and Medium-Duty Trucks and RVs.

FEATURES & BENEFITS:

- Plugs into the vehicle side socket
- LEDs indicate that each circuit is working
- Eliminates guesswork
- Winged grip for easy removal from electrical connector

For testing Integrated Brake Controllers, see Part# 9107B as this tool may not work for testing electric brake circuits on vehicles with Advanced or Integrated Brake Controllers.

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