TecNiq T99 4-Pole Trailer Wiring Harness
The TecNiq T99 4-Pole Trailer Wiring Harness provides a durable and dependable wiring solution for utility trailers, cargo trailers, boat trailers, and other light-duty trailer applications. Featuring an industry-standard 4-flat connector, bonded GPT wire, and durable molded construction, the T99 harness is designed to deliver years of reliable performance and simple installation.
Available in four lengths, the T99 is ideal for replacing damaged trailer wiring or wiring a new trailer build from scratch. High-quality stranded copper conductors and color-coded bonded wire make installation straightforward while providing dependable electrical connections for tail lights, brake lights, and turn signals.
Free shipping in the lower 48 states.
What’s Included
- (1) TecNiq T99 4-Pole Trailer Wiring Harness
Available Configurations
- T99-0090-1 – 20 Foot Wire Harness
- T99-0091-1 – 25 Foot Wire Harness
- T99-0092-1 – 30 Foot Wire Harness
- T99-0093-1 – 35 Foot Wire Harness
Key Features
- Industry-Standard 4-Flat Trailer Connector
- Available in 20′, 25′, 30′, and 35′ Lengths
- High-Quality Bonded GPT Wire
- Color-Coded Conductors for Easy Installation
- Durable Molded Connector Construction
- Stranded Copper Conductors
- PVC Insulation for Long-Term Durability
- Ideal for Trailer Lighting Systems
- Designed and Assembled by TecNiq Inc.
Reliable Trailer Wiring Solution
The T99 harness provides a complete wiring solution for trailers using a standard 4-way flat connector. The bonded wire construction keeps the individual conductors neatly organized and protected while simplifying installation on utility, cargo, and boat trailers.
Easy Installation
Color-coded wires make identifying each circuit simple during installation and troubleshooting.
- White: Ground
- Brown: Tail / Running Lights
- Yellow: Left Turn & Brake
- Green: Right Turn & Brake
Built for Harsh Trailer Environments
Constructed using high-quality GPT wire and durable molded connectors, the T99 harness is designed to withstand vibration, moisture, road debris, and everyday trailer use. The flexible wire jacket allows for easy routing while providing dependable electrical performance.
Ideal Applications
- Utility Trailers
- Cargo Trailers
- Boat Trailers
- Landscape Trailers
- Small Equipment Trailers
- ATV and UTV Trailers
- Custom Trailer Builds
- Trailer Lighting Repairs and Upgrades
Why Buy from Johnson Trailer Parts?
We supply genuine TecNiq lighting and wiring products backed by knowledgeable customer support. Whether you’re wiring a new trailer build or replacing an existing harness, we’re here to help you choose the right solution.
Questions?
Need help selecting the correct trailer wiring harness? Contact us for assistance with fitment, installation, and product selection.
Call or Text: (602) 292-9690
Email: sales@johnsontrailerparts.com






