Trailer Light 7-Way Plug Tester with 7, 6, 4/5 Pin Adapter, Water-Resistant Portable Electric Brake Tester for RV/Boat/Utility Trailer with Short Circuit Protection(Battery NOT Included)

Diagnose trailer lights solo with no truck and no helper needed—simply connect the Lrichy trailer light tester to any standard North American trailer connector and instantly verify all lighting and brake functions without yelling back and forth at the taillights. This universal tester works with 7-Way Spade, 6-Way Round, and 4/5-Way Flat pin connectors (adapters included), covering 99% of trailers on the road including boat trailers, RV campers, utility trailers, horse trailers, flatbed trailers, and heavy-duty equipment trailers. The single-person operation design allows independent testing of left/right turn signals, brake lights, tail/marker lights, backup lights, 12V auxiliary power, and electric brake output—essential for verifying brake controller function before towing heavy loads. Safety is built in with an auto-resetting thermal circuit breaker that protects your vehicle and trailer wiring from accidental shorts and overloads, eliminating blown fuses and damaged harnesses. The rugged water-resistant ABS enclosure with rubber gasket stands up to rain, mud, dust, and job site conditions, while the pull handle and compact size make it easy to carry and store in your truck cab, tool box, or trailer compartment. Additional features include a battery compartment with secure lid lock, padlock hole for security, 12V cigarette socket for auxiliary power testing, power LED indicator, and manual rotary control knob for quick intuitive operation. Perfect for maintenance technicians, fleet operators, RV and boat owners, farm and ranch owners, trailer dealers, and trucking yards. Specifications: input 12V DC battery (battery not included), output 10A @ 12V DC, overload protection 10A auto-resetting thermal circuit breaker, connection type 7-Way Flat Spade Pin (6-Way Round and 4/5 Pin with included adapters), control type manual rotary switch, materials rugged ABS plastic, weight 2 lbs. (empty). Includes detailed instruction manual and battery leads.

• 🏆【Universal Compatibility】Lrichy trailer light tester can test most standard North American trailers: 7-Way Spade, 6-Way Round, and 4/5-Way Flat pin connectors. Works with boat trailers, RV campers, utility trailers, horse trailers, and more. One tool covers 99% of trailer types and usage scenarios on the road.
• 🏆【Solo Quick Operation】The 7-pin trailer plug tester tests the turn, brake, tail lights, and back-up lights alone. No tow vehicle or extra person needed, saving time and effort.
• 🏆【Safe and Reliable】The trailer plug tester simulates electric brake output—test brake function before towing. Circuit protection prevents shorts, blown fuses, and wiring damage. Designed for professionals and DIYers.
• 🏆【Rugged & Portable】Rugged ABS plastic and water-resistant construction withstands rain, mud, and job site conditions. The pull handle facilitates easy Portable, while the compact size allows convenient storage in various locations. Ready when you need it.
• 🏆【Satisfaction Guarantee】Lrichy attaches great importance to product quality and customer shopping experience! We provide 2 Years of warranty service and a refund for any product quality issues! If you have any problem, you can contact us via Amazon! Free exchange and refund policy for a truly hassle-free after-sales service!