T-One Connector Assembly w/ModuLite Module

The T-One Connector Assembly w/ModuLite Module is a complete trailer light wiring harness solution engineered for Toyota full-size trucks from 2001–2002. This integrated connector system eliminates the frustration of custom-fabricating brake and tail light circuits when adding a trailer to your vehicle. For truck owners installing aftermarket towing systems, this factory-compatible assembly bridges the gap between your truck's existing electrical architecture and trailer-specific lighting demands, saving hours of diagnostic troubleshooting and potential electrical faults.

The ModuLite Module component manages voltage regulation and signal isolation, ensuring brake and tail light commands transmit cleanly from the vehicle to the trailer without ground loops or signal degradation. This assembly's T-One connector standard integrates seamlessly with OEM Toyota truck wiring, avoiding the need for splicing directly into factory harnesses—a practice that degrades connector contacts and invites corrosion over years of road salt and thermal cycling. The compact 5.1 x 4 x 8 inch footprint tucks neatly behind the bumper or into the frame cavity, and at 0.85 lbs, adds negligible weight to your truck's rear end.

DIY truck owners and professional installers benefit most from this harness when retrofitting older Toyota trucks with modern trailers, utility boxes, or fifth-wheel hitches that demand proper lighting compliance. Mechanics appreciate the plug-and-play design because it reduces labor time and eliminates the liability of custom wiring modifications that may not meet DOT lighting standards. Installation requires no cutting of factory wiring; the T-One connector anchors to the truck's existing electrical system, and the ModuLite Module handles the active signal translation. Ensure compatibility by confirming your model year falls within the 2001–2002 range for Toyota full-size trucks before purchase.