Description
Test the Trailer Without the Truck!
The Light Ranger MUTT® is a portable, water-resistant diagnostic tool designed to test trailer lights, electric brakes, and 12V circuits—without needing a truck. Built for light-duty trailers, it simulates the functions of a standard tow vehicle, allowing fast, fuse-free testing for RVs, boat trailers, landscape rigs, and more. The Light Ranger™ features a standard 7-way spade connector, commonly used on RVs, car haulers, and larger trailers. The Ranger MUTT™ includes a 3-way adapter to easily test 4-pin and 5-pin connectors typically found on boat and smaller utility trailers, as well as 6-pin connectors used on horse and work trailers. Whether you’re performing a quick safety inspection or diagnosing a lighting fault, this trailer tester makes testing simple, safe, and accurate. With built-in short circuit protection, rugged construction, and USA-made quality, it’s a must-have for technicians and trailer owners.
Features and Benefits
- Simulates turn signals, brake lights, and 12V power to test trailer lighting and brake systems
- Standard 7-way spade connector (#9101 includes 3-way adapter for 4-pin, 5-pin, and 6-pin trailer plugs)
- Auto resetting breaker, water-resistant, and built in the USA for reliable use in shop or field environments
- Tests trailer-side electric brake function
- Includes 500mA battery charger; Battery not included: requires 12V (Group 14) battery (approx. 7.75″ L × 5″ W × 6.25″ H)
Includes
#9101: • 500mA Battery Charger (#CHR0001) • 3-Way Trailer Adapter (#8000)
#9101-AD: • 500mA Battery Charger (#CHR0001)
Nick –
This is just about the easiest way to get the trailer wiring working right. Wow I did not know it would help out so much.. get one you will not regret it.
MIKE VANDERPLAATS –
DOES IT COME WITH THE BATTERY
Marketing Team (store manager) –
The #9101 Light Ranger MUTT® and #9102 Heavy Ranger MUTT® do not come with batteries. We recommend a Group 14 Yuasa: YTX14 or similar.
Don C. (verified owner) –
Great products great service great doing business with you THANKS IPA TOOLS NY….
Donald Curran (verified owner) –
Brad D Boyd (verified owner) –
GREAT FOR MOBILE APPLICATIONS ON THE YARD OR OUT IN THE FIELD. VERY HANDY FOR QUICK DIAGNOSIS TO DETERMINE IF THE ELCTRICAL FAULT IS CONCERNING THE TRAILER OR THE CUSTOMER’S TRUCK PULLING THE TRAILER. BASICALLY HELPS ISOLATE THE TRAILER FROM THE PULL VEHICLE TO GIVE US DIRECTION TO LOOK FURTHER WHERE THE FAULT IS.
Gerald DePoorter (verified owner) –
George Poevrakis (verified owner) –
Will –
versatile makes testing the small trailer lights much easier
Rick –
Real time saver Love this tool makes trust in my trailer so much easier when rewiring lights and things of that nature Glad to have it in my toolbox
John –
Functions as advertised The product is enclosed in a very strong plastic case. It’s portable and is extremely helpful for diagnosing wiring problems off the vehicle. Just remember that it requires an appropriately sized battery to operate.
Amazon Customer –
Trailer tester Works great
Master DJ –
great! Great product. Work very well
Matthew Corcoran –
Great tool for anyone working on trailers This made working on my trailer brakes and fixing my lighting issue so much easier. Great way to verify whether it be a trailer issue or an issue with the tow vehicle.
Fred Matthews –
Easy to work. I love this tester.
Richard –
Great product Works great. Portable and easy to use
JORGEV 399 –
Easy to use. Works great bought 2
AlphaOmega –
It is simple and it works great…. We ship 100 + Car Tow Dollies a month all the country. We need to be able to quickly and easily test the wiring and lights before they leave. We had a home made contraption that had become a nuisance to use. Went online and found this item. Very very pleased with it. It works great, simple and fast to use, been reliable so far. Very well designed and thought out. Highly recommended.
Bruce D. –
Quickly analyze and fix trailer wiring. Great device for quickly analyzing and fixing trailer wiring issues.
We also use a power probe, and this provides a useful battery for that.
Ferrets –
Works exactly as specified. As an RV inspector, I can state that this device works exactly as expected. It’s invaluable for testing trailer lights.
It requires a battery. The battery I added is in this link. (https://www.amazon.com/gp/product/B01GQO3EGK/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1)
It just works.
JC –
Awesome This is such a great device for trailers. Works awesome.
Harris Automotive –
just what i needed thanks
Amazon Customer –
Time saver It is great, bought it for work since we have 4 trailers. This prevents us from having to move a truck around the site to test all the lights.
Gregory Crawford –
Very handy tool. Very handy tool to have for wiring up a trailer or fixing existing wiring.
ryan –
Happy Happy
Tamara P. –
Easy to Use, Helped End Marital Discord Very handy for testing trailer lights when there’s not a vehicle available and has reduced the angst from certain members in my household when it comes to hauling stuff on our trailer 3 or 4 times a year. Now there’s nothing I can’t test and fix ahead of time! Even blinks for the turn signals.
birz –
Compact Small and compact….use it every day for trailer work
Se Halfhill –
Keep the lights on Great item anyone that owns more then one trailer should have one in their shop