9102 7-Way Round Pin Trailer Light Check Box (SAE J560) Suitable for Commercial Trailers | with 7-Way Round Pin Circuit Tester and 7865L Charger | Test

ALL-IN-ONE CONNECTIVITY - Trailer tester virtually all trailer types with built-in 7-way round pin, 7-way trailer plug tester 7865l. Eliminates the need for multiple testers for RVs, boat trailers, utility trailers, and horse trailers
UNIQUE TEST TOOL - 7 pin trailer wiring tester. Perform complete towing checks without a tow vehicle. Quickly check taillights, turn signals, brake lights, and electric brakes directly at the store or storage site, saving time on pre-trip inspections
HEAVY DUTY AND WEATHERPROOF - 7-way light tester housed in a durable, water-resistant case built to withstand workshop and outdoor use. Robust construction ensures long-term reliability by protecting internal components from dust and moisture
Short Circuit ProtectionThe 9102 trailer light tester features built-in short circuit protection to protect both the tester and the trailer electrical system during diagnosis. Auto reset prevents damage from accidental wiring failures
PORTABLE & READY TO USE - Compact and portable trailer light check box for easy storage and transportation. Powered by a common 12V battery (battery not included), with a clear design for fast, direct diagnostics anywhere
Worry-Free ServiceOur Promise: full support and free returns. Your satisfaction is guaranteed. If any issues arise with your 9102 light tester, our after-sales team is here to help with free returns and exchanges