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TecNiq T99 4-Pole Trailer Wiring Harness


Made in USA

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 and bonded GPT wire, the T99 is available in 20′, 25′, 30′, and 35′ lengths for easy installation and long-lasting performance.

Free shipping in the lower 48 states.

Price range: $18.95 through $24.95

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

Brand TecNiq
Series T99
Product Type 4-Pole Trailer Wiring Harness
Available Part Numbers T99-0090-1 – 20 Foot
T99-0091-1 – 25 Foot
T99-0092-1 – 30 Foot
T99-0093-1 – 35 Foot
Available Wire Lengths 20 Foot, 25 Foot, 30 Foot, 35 Foot
Connector Type 4-Flat Trailer Connector
Wire Type Bonded GPT Wire
Wire Functions White – Ground
Brown – Tail / Running Lights
Yellow – Left Turn & Brake
Green – Right Turn & Brake
Light Circuits Tail Lights, Brake Lights, Turn Signals, and Ground
Common Applications Utility Trailers, Cargo Trailers, Boat Trailers, Landscape Trailers, Small Equipment Trailers, ATV Trailers, UTV Trailers, and Custom Trailer Builds
Country of Origin Designed and Assembled by TecNiq Inc.