Every trailer on the road can be a liability if not properly tested. Electrical faults aren’t always obvious, and relying on a tow vehicle alone introduces variables that can hide wiring, ground, and brake issues that lead to expensive downtime, DOT violations, failed inspections and more.
The Heavy Ranger® MUTT® is built for those who work on or operate heavy-duty 7-way round (SAE J560) tractor-trailers. Designed for semi-trailers, dry vans, reefers, flatbeds, lowboys, and other commercial equipment, it independently powers lighting, brake, and 12V auxiliary circuits without hooking up to a truck. Rugged, water-resistant, and made in the USA, the Heavy Ranger® MUTT® eliminates guesswork and delivers peace of mind.
Features and Benefits
- Tests 7-way round (J560) pin trailer harnesses without connecting to a truck
- Simulates turn signals, brake lights, and 12V power for system verification
- Built-in short circuit and overload protection
- Visual LED confirms power output at each circuit
- Rugged, water-resistant design for field or shop use
- Internal battery compartment (battery not included)
- External 12V port supports memory saver, test light, or charging functions
#9102-D20C – Compatible with DeWalt® 20V batteries (battery not included)
#9102-18C – Compatible with Milwaukee® 18V batteries (battery not included)
Includes
#9102 (Only): 500mA Battery Charger (#CHR0001)
DEWALT is a trademark of Stanley Black & Decker, Inc. MILWAUKEE is a trademark of Milwaukee Electric Tool Corporation. Innovative Products of America, Inc. is not affiliated with, authorized by, endorsed by, or sponsored by either company. Use of this adaptor is not endorsed by either company and may affect the battery or tool warranty. Consult the battery manufacturer’s terms for details.
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Jonathan Turner (verified owner) –
Todd S. (verified owner) –
Great Tool.
David L Seipel (verified owner) –
I wish the enclosure would store all the accessories
Brad D Boyd (verified owner) –
GREAT FOR MOBILE APPLICATIONS ON THE YARD OR OUT IN THE FIELD. VERY HANDY FOR DOT/FEDERAL INSPECTIONS IF NO TRUCK IS AVAILABLE TO FIRE UP THE TRAILER WHEN PERFORMING AN INSPECTION.
Adam w. –
works good for trailer business Ok
mjwarren2000 –
Good tester As advertised, easy to use, heavy duty.
Have to supply your own battery.
Mark Ellis –
Makes testing the electrical on a trailer go faster. Works great,
William Scott Gable –
User friendly Plastic materials used
Richard –
Compact I use it to test trailer lights, love it
Steve Moats –
good good
Clinton Place –
Good deal! Wish it would have came with the battery and charger.
Jose Colon –
Great Tool Excellent, a must have if you own a trailer…….Its works great
wanda schumacher –
Money Well Spent!!!!!!!!!!! This tool is money well spent. It is easy to use and works as well as they say, compact and ready to use when I need it. After buying this for my personal use my company (who was impressed with it) bought 5 more for our service trucks to use.
James S. –
Name brand. Very high quality. Best purchase ever Best thing I’ve ever bought off of Amazon
robinp8818 –
kids kids love it
Shane Hainstock –
Great tool! Used it several times for yard checks and roadside and never let me down.
a & d –
VERY NICE Works real good, saved me a lot of time
craig –
great product. Made in the USA great product . Made in the USA,, if you have a commercial trailer you need this. battery extra,, walmart or similar..
TwdPsychox1 –
Really really light and requires a battery Works perfect!!
bryanbohland –
Five Stars easy way to check trucks and trailers quickly.
Amazon Customer –
It absolutely met my expectations. I use it almost … It absolutely met my expectations. I use it almost every day. It’s very portable and allows you to to Isolate circuits
David –
Five Stars Buy it and save time and money
Marsha N. –
Five Stars Works
James G Gobert –
Five Stars Great product!