WIR-2000-KIT · Y-Style 3-Light Rewire Kit
Complete 4-Way Flat Harness · Peterson 3-Light Y-Harness · Jammy LED Markers · TecNiq License Light
Overview
The WIR-2000-KIT Y-Style 3-Light Rewire Kit is a ready-to-install LED wiring solution for small utility, landscape, and cargo trailers using a 4-way flat connector.
This kit includes two complementary harnesses that work together:
- Novalite 4-Way Flat Harness (01-8801-B) — carries power from the tow vehicle to the trailer frame; it’s the main feed line that powers the system.
- Peterson 3-Light Y-Harness (160-493) — splits that feed neatly at the rear, distributing power to the left, right, and center identification lights without splicing or guesswork.
Together, they form a streamlined circuit: the 4-way brings current in, the Y-harness organizes it out — a cleaner, faster, and more reliable setup than a hand-spliced wiring job.
Each kit also includes Jammy sealed LED marker lights and a TecNiq LED license plate light, giving your trailer modern brightness and DOT-approved durability. Perfect for restorations, shop builds, or weekend projects.
Features
- Complete Y-style rear harness with integrated 3-light distribution
- Pre-terminated 4-way flat plug for quick connection to tow vehicle
- DOT-approved LED marker and license lights
- Weather-sealed connectors and grommet mounts
- No-splice installation — plug, route, secure, done
- Compatible with all 12-volt trailer systems
Included Components
| Component | Part Number | Quantity |
|---|---|---|
| Peterson 3-Light Y-Harness | 160-493 | 1 |
| Jammy 2½″ Amber LED Marker Light Kit | J-25-AK | 2 |
| Jammy 2½″ Red LED Marker Light Kit | J-25-RK | 2 |
| TecNiq LED License Plate Light | L34-WC9B-1 | 1 |
| Novalite 4-Way Flat Harness | 01-8801-B | 1 |
Fitment and Use Cases
Designed for most small and mid-size trailers using a 4-way flat plug. Ideal for replacing incandescent wiring, upgrading to LED, or starting from scratch on a new build.
| Trailer Type | Typical Fitment |
|---|---|
| Utility / Landscape Trailer | Single-axle 4-way system, standard marker layout |
| Small Cargo or Enclosed Trailer | Y-harness fits standard rear light spacing |
| Boat Trailer | Freshwater use (not submersible rated) |
| Farm / Utility Wagon | Compatible with 12-volt towing systems |
| Custom Builds | Converts older incandescent wiring to LED without splicing |
Technical Specifications
| Specification | Detail |
|---|---|
| Harness Type | Peterson Y-style 3-light distribution |
| Plug Connector | 4-way flat (standard ground, left, right, tail) |
| Lighting Type | Sealed LED marker and license lights |
| Operating Voltage | 12 V DC |
| Wire Length | Approx. 25 ft overall harness length |
| Compatibility | Fits most 4-way trailer connectors and tow vehicles |
Installation Tips
- Route the 4-way harness first — it’s your main power line from the vehicle.
- Mount the Y-harness at the rear crossmember to split the circuits left, right, and center.
- Secure wiring along the trailer frame with zip ties or clips.
- Ensure a clean ground connection from harness to trailer frame.
- Test lights before travel and apply dielectric grease to connectors for corrosion resistance.
Common Questions
Q: Why do I need both the 4-way and the Y-harness?
A: The 4-way brings power from your tow vehicle; the Y-harness distributes it at the rear to left, right, and center lights. Using both eliminates splicing, speeds installation, and prevents wiring errors.
Q: Can I use this kit on a boat trailer?
A: Yes, for freshwater or light-duty marine use. For submersible setups, choose our WIR-4000-KIT Marine LED Rewire Kit.
Q: Does this work with older vehicles?
A: Yes, the 4-way flat connector fits most trucks and SUVs without adapters.
Q: Do I need extra wire?
A: For trailers longer than 20 ft, an extension harness may be required.
