TecNiq T42 4″ Round LED Stop Tail Turn & Reverse Light Kit, Grommet Mount
Upgrade your trailer lighting with genuine TecNiq T42 4″ round LED combination lights. Designed for trailers, truck bodies, service vehicles, commercial vehicles, and custom builds, this complete kit combines stop, tail, turn, and reverse lighting into one compact grommet-mount fixture.
The TecNiq T42 features a large integrated reverse light surrounded by high-visibility stop, tail, and turn LEDs, providing exceptional rear visibility while reducing the need for separate reverse lights.
Built in the USA and backed by a TecNiq Limited Lifetime Warranty, the T42 features IP68 waterproof construction, TecSeal urethane-potted electronics, UV-resistant polycarbonate housings, and a 100,000+ hour service life for reliable performance in demanding environments.
Free shipping in the lower 48 states.
What’s Included
- (2) TecNiq T42 LED Stop, Tail, Turn & Reverse Lights
- (2) Rubber Grommets
- (10) Heat Shrink Solder Connectors
- (10) Quick Splice Connectors
- (4) Wiring Connectors (AMP or Tri-Pole, depending on selected configuration)
Choose Your Light Configuration
- T42-RW0A-1 – Red Lens / Red & White LED / AMP Connector / Grommet Mount
- T42-RW0T-1 – Red Lens / Red & White LED / Tri-Pole Connector / Grommet Mount
Stop, Tail, Turn & Reverse Lighting
The TecNiq T42 combines rear signal lighting and backup lighting into one compact 4″ round housing. This makes it an excellent choice for trailers and work vehicles where space is limited but maximum functionality is required.
Large Integrated Reverse Light
Unlike many combination trailer lights that use small reverse LEDs, the T42 features a large dedicated reverse light in the center of the housing. This provides enhanced visibility when backing trailers, equipment, and commercial vehicles while eliminating the need for separate reverse lights in many applications.
Standard 4″ Round Grommet-Mount Installation
The T42 is designed to fit standard 4″ round grommet-mount applications using the included rubber grommets. This makes it an ideal upgrade for trailers, utility bodies, service trucks, and custom vehicle builds.
AMP or Tri-Pole Connector Options
Choose the connector style that best fits your application. Both AMP and Tri-Pole connector versions provide secure, weather-resistant electrical connections while simplifying installation and future serviceability.
Built for Harsh Environments
Featuring TecSeal urethane-potted electronics, impact-resistant polycarbonate construction, and an IP68 waterproof rating, the T42 is engineered to perform in rain, mud, dust, road salt, vibration, and demanding outdoor conditions.
Made in the USA
TecNiq manufactures the T42 in the United States using premium materials and rigorous quality standards. Each light is backed by TecNiq’s Limited Lifetime Warranty for long-term confidence and reliability.
Common Applications
- Utility Trailers
- Cargo Trailers
- Dump Trailers
- Equipment Trailers
- Landscape Trailers
- Enclosed Trailers
- Boat Trailers
- Flatbed Trailers
- Truck Bodies
- Service Bodies
- Commercial Vehicles
- Custom Builds
Why Buy from Johnson Trailer Parts?
Johnson Trailer Parts supplies genuine TecNiq lighting products backed by practical trailer parts knowledge and real-world installation experience. We help trailer owners, repair shops, fleet operators, and builders select dependable lighting solutions built to perform for years in demanding environments.
Questions?
Need help choosing the correct TecNiq lighting products for your application? Contact us for assistance with lighting, wiring, DOT compliance, and fitment.
Call or text: (602) 292-9690
Email sales@johnsontrailerparts.com









