Innovative Products of America Heavy Ranger® MUTT® Portable Trailer Light Tester with 7-Way Round Pin (SAE J560) for Commercial Tractor Trailers (D20C Battery Adapter)

The #9102-D20C Heavy Ranger MUTT with Integrated Power-Management Technology is a portable, water-resistant trailer tester with a built-in, proprietary, smart adapter system compatible with DeWalt 20V power tool batteries. It makes trailer testing more flexible and reliable in the field by simulating the functions of a standard tow vehicle, allowing fast, fuse-free testing without needing a truck. Built for commercial trailers (J560), it is a versatile solution for confirming wiring configuration, ground integrity, short circuits, brake function and turn signal operation. The patent-pending adapter acts as a precision-regulated power plant, stabilizing current while providing a failsafe barrier that protects the trailer, circuitry and battery cells from short circuits and premature depletion. By maximizing efficiency, it significantly extends runtime, allowing more tests per charge while neutralizing RF interference and heat to ensure 100% diagnostic accuracy. This USA-made, standalone unit speeds up diagnostics, prevents blown fuses and eliminates guesswork with built-in short circuit and battery protection.

• Simulates turn signals, brake lights and 12V power for system verification
• Tests 7-way round pin (J560) trailer harnesses without connecting to a truck
• Proprietary battery adapter features voltage-regulating technology to convert 20V batteries to 12V
• Stabilizes current and reduces heat, protecting the tester and battery life while preventing short-circuit damage
• Reduces downtime by swapping out batteries for all day testing - simply click in a battery on hand and start testing
• Compatible with DeWalt 20V batteries (battery not included); adapter is not cross-compatible; must confirm specific model for intended use