Universal 7-Way LED Retrofit Kit – WIR-3000-KIT
Complete 7-Way LED Trailer Rewire Kit · 14-Gauge Harness · Junction Box & Plug
Product Description
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.
Kit Includes
- (1) WTC147M-5-25 – 14-7 Multi-Gauge Bonded Trailer Wire (varied lengths)
- (1) 118151 – Tekonsha ModuLite Installation Wiring Kit
- (1) 118243 – Tow Ready 7-Way Junction Box & Plug Assembly
- (2) M09300R – Maxxima 3/4" Round Red LED Marker Lights
- (1) L34-WC9B-1 – TecNiq License Plate Light with Grommet
Specifications
| 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.
Pricing by Harness Length
| 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 |
Fitment & Use Case
Ideal for:
- Utility and cargo trailers with electric brakes
- Small boat or marine trailers (sealed connectors recommended)
- Car haulers and flatbeds with reverse or auxiliary 12 V lighting
- RV and camper conversions needing 7-way LED compatibility
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.
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We ship quickly and carefully, with tracking provided on every order. Most items ship the same or next business day. Your parts will arrive safely and on time, ready to use.
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Your satisfaction is guaranteed. Returns, refunds, and exchanges are accepted — no hassle. We stand behind every part we sell, so you can purchase with confidence.
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At R and P Carriages, we believe in treating our customers like family. Whether you need a small replacement part or a complete trailer service, we’re here to help with friendly, expert support every step of the way.
