Description
Test the Trailer Without the Truck!
The Light Ranger Mobile Universal Trailer Tester (MUTT®) is a portable and water resistant trailer light and brake tester that allows the user to perform all testing functions without the use of the vehicle. For 7-way spade, 6-way round and 4/5 pin trailer harnesses, the Light Ranger MUTT® simulates all electrical circuits of standard towing vehicles for boating, RV, landscaping, hunting and similar type light-duty trailers. Included with each tester is a battery charger and 3-way trailer harness adapter.
Features and Benefits:
- Tests 7-way spade, 6-way round and 4/5 pin trailer side harnesses
- Short circuit protection
- Turn signal simulation and power verification LED
- Water resistant
- 500mA Battery Charger and 3-Way Trailer Adapter included
- Internal battery compartment (battery not included)
Includes:
• 500mA Battery Charger (#CHR0001)• 3-Way Trailer Adapter (#8000)

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