Match the part number, measurements and connection points that apply to your trailer.
| Hub Face | Measure hub face to hub face. |
|---|---|
| Spring Center | Measure mounting centers and confirm perch configuration. |
| Capacity | Match the required axle rating. |
| Brakes | Confirm brake type and flange configuration. |
Complete 7-Way LED Trailer Rewire Kit · 14-Gauge Harness · Junction Box & Plug
WIR-3000-KIT is a complete 7-way LED trailer rewire and retrofit kit built from premium components we use in our own trailer builds. It combines durable 14-gauge bonded copper wire (WTC147M-5-25) with DOT-approved LED lighting, a pre-wired junction box, and a molded 7-way plug. Everything you need to replace or upgrade your trailer’s electrical system front to back.
Each circuit is color-coded to SAE standards for simple hookup. All LEDs are sealed and corrosion-resistant for long service life on utility, cargo, or light-duty marine trailers.
| Harness Type | 7-Way RV Blade |
| Wire Gauge | 14-7 Multi-Gauge Copper (WTC147M-5-25) |
| Voltage | 12 V DC |
| Lighting Type | LED – Sealed, DOT-Approved |
| Cable Length | 20–40 ft options available |
| Compatibility | Single or tandem axle trailers up to 40 ft |
| Condition | New – Complete Kit, Ready to Install |
Available harness lengths: 20 ft, 25 ft, 30 ft, 35 ft, 40 ft. Select your preferred length from the menu above before adding to cart.
| Harness Length | Wire Cost (est.) | Kit Cost | Target Price | Notes |
|---|---|---|---|---|
| 20 ft | –$7.75 | ~$92.42 | $174.99 | Entry tier, short utility trailers |
| 25 ft | baseline | $100.17 | $184.99 | Standard length |
| 30 ft | +$7.75 | ~$107.92 | $194.99 | Common upgrade size |
| 35 ft | +$15.50 | ~$115.67 | $204.99 | Mid-length cargo/flatbeds |
| 40 ft | +$23.25 | ~$123.42 | $214.99 | Long tandem or gooseneck setups |
Ideal for:
Each LED component is sealed for moisture protection and designed for quick connection through the included junction box.
Contact our team for tailored setups, bulk order pricing, or replacement harness options:
?? (815) 357-3292 · sales@needatrailerpart.com
R & P Carriages · Seneca, Illinois · Trusted Since 1996
We sell what we install – trailer parts, service, and expert support.
