Smart MUTT® (7-Way Flat Pin)
Mobile Universal Trailer Tester


Smart MUTT® (7-Way Flat Pin)
Mobile Universal Trailer Tester

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Smart MUTT® (7-Way Flat Pin)
Mobile Universal Trailer Tester

(2 customer reviews)

A portable trailer tester for the professional service shop for light-duty trailer lighting and electric brakes.

Find A Distributor
For International Customers
Distributor Information

To locate a distributor near you, please call 888-786-7899 or email us here.

International Sales

To place an order from outside of the United States, please call 888-786-7899 or email us here


Quickly Troubleshoot and Repair Light Duty Trailers

Built to facilitate a one-man testing operation, the Smart MUTT ® reduces guesswork and inspection time to prevent failures that lead to expensive road calls and citations. This unit places a load on the trailer’s electrical circuits to verify proper lighting function. The Smart MUTT® is designed to be used on 7-way flat, 6-way round, and 4/5 pin connections.

Features and Benefits:


  • Power lights: Manually, All-On, Auto Scan, or Remote Control
  • Audible and visual alerts: cross, open, overloaded and short circuit indication
  • Pulsar® mode allows diagnostic repair
  • Advanced trailer wiring diagnostics
  • Diagnostic Pulsar® mode allows safe overloaded/short circuit repair
  • Analog Ammeter Readout 0-20 Amps
  • Remote control allows for one-man testing

• 12-Button Remote Control (#MUT-RM12-4A) • 500mA Battery Charger (#CHR0001) • 3-Way Trailer Adapter (#8000)

2 reviews for Smart MUTT® (7-Way Flat Pin)
Mobile Universal Trailer Tester

  1. Wilton M.

    Does the Job Good Job

  2. Kevin Carter

    Five Stars Great product. Wish it came with the battery

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Connection Type: 7-Way Flat Pin
Power Input: 12/24V DC
Battery Requirements (Battery Not Included): Yuasa #YTX14 or Similar Recommended
Source Output: 20A @ 12/24V DC
Controls: Manual, Remote, Automatic
Material: Powder-Coated Steel
Weight: 10 lbs.
Dimensions: 12" L x 9.5" W x 9" H
Warranty: 3-Year Limited Warranty

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