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

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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
Distributor Information

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

Available To Order


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)

Read Our Full Trailer Testing Blog Here

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

  1. Kevin Carter

    Five Stars Great product. Wish it came with the battery

  2. Wilton M.

    Does the Job Good Job

Only logged in customers who have purchased this product may leave a review.

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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