Super MUTT® Service-Truck Edition
Mobile Universal Trailer Tester

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Super MUTT® Service-Truck Edition
Mobile Universal Trailer Tester

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Super MUTT® Service-Truck Edition
Mobile Universal Trailer Tester

Available To Order

Diagnostic light and air brake trailer tester designed for service trucks and mobile applications.

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

Price $2,054.00
3 Year Warranty
30-Day Money Back Guarantee


Quickly Troubleshoot Lighting and Air Brake Systems with the Industry’s Leading Mobile Universal Trailer Tester Head

This intuitive and durable design is ideal for both on and off-site trailer testing and repairs on emergency vehicles.

Features and Benefits:

ELECTRICAL TESTING(12/24 Volt Operation)

  • Power lights: Manually, all-on, auto scan, or by remote control
  • Audible and visual alerts: cross, open, overloaded and short circuit indication
  • Pulsar® mode allows diagnostic repair
  • Advanced trailer wiring diagnostics
  • Amperage readout and range (0-20 amps)
  • Cable testing
  • Ground failure detection: differentiates between wire and chassis ground


  • Performs leak-down test on service and emergency lines
  • Remote control allows observation of slackers to measure and adjust pushrods
  • Real-time, repetitive brake activation to find developing problems and verify leaking servo cans


  • (2x) 12-button remote controls test all trailer electric circuitry and air brake actuation, 200 ft. range
  • Sync multiple (12) remotes to one unit


• (2x) 12-Button Remote Control (#MUT-RM12) • 5′ 7-Way Cable (#7900K-1) • External Battery Connector with Clips(#9005A-4AS) • 8′ Red Hose with Gladhands (#7900AP-8RD-AS) • 8′ Blue Hose with Gladhands (7900AP-8BL-AS) • 500mA Battery Charger (#CHR0001) • Face/Battery Shield (#9008-4R)

Read Our Full Trailer Testing Blog Here

Connection Type: 7-Way Round Pin
Power Input: 12/24V DC
Suggested Battery: Yuasa #YTX14 or Similar Recommended
Source Output: 20A @ 12V DC
Max Operating Pressure: 120 psi
Air Input: ¼" npt (120 psi max.)
Controls: Manual, Remote, Automatic
Tires: 10" Pneumatic
Material: Powder-Coated Steel
Weight: 26 lbs.
Dimensions: 12" L x 9.5" W x 11.5" H
Warranty: 3-Year Limited Warranty

SKU: 9008-4R

Face Shield


SKU: 7900AP-2640AS

Air-In Fitting



Pressure Gauge








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