Trailer Wire Harness
Professional trailer wire harness manufacturing for towing applications. Lighting circuits, brake controllers, and connector assemblies with weatherproof construction for reliable road use.
Trailer Harness Applications
Complete trailer electrical solutions.
Lighting Circuits
Tail lights, brake lights, turn signals, and marker lights
Brake Systems
Electric brake controllers and breakaway switches
Auxiliary Power
12V accessory power and battery charging circuits
Tow Vehicle Interface
7-way, 5-way, and 4-way connector assemblies
Extension Cables
Coiled cords and straight extension harnesses
Specialty Trailers
RV, boat, horse, and commercial trailer wiring
Trailer Harness Features
Essential capabilities for trailer applications.
Weatherproof Design
Sealed connectors and UV-resistant materials for outdoor exposure
DOT Compliance
Harnesses meeting DOT lighting requirements for road use
Corrosion Resistance
Tin-plated terminals and corrosion-resistant housings
Abrasion Protection
Durable jacketing and loom for under-trailer routing
Trailer Harness Specifications
Towing Expertise
Trailer harnesses face harsh conditions including weather exposure, road spray, and vibration. Our designs use appropriate materials and construction for reliable long-term service.
- SAE/DOT compliant
- Weather-sealed connectors
- Corrosion-resistant terminals
- UV-resistant materials
Professional Trailer Wire Harness Manufacturing
OurPCB manufactures trailer wire harnesses for towing and trailer applications. From utility trailers to RVs, we build lighting harnesses, brake controller wiring, and connector assemblies designed for outdoor exposure and road use.
Our weatherproof harnesses use UV-resistant materials and sealed connectors for reliable service in rain, sun, and road spray. We follow DOT and SAE standards for trailer lighting to ensure compliance for road use.
For heavy duty trailers and commercial applications, we provide appropriately rated wire gauges for electric brake systems and auxiliary power circuits. Our trailer harnesses interface with standard 7-way, 5-way, and 4-way connectors.
Whether you need replacement trailer harnesses or custom wiring for specialty trailers, we deliver weatherproof solutions. Contact us to discuss your trailer wiring requirements.
Trailer Harness FAQ
We manufacture harnesses for all standard trailer connectors including 7-way RV blade, 7-way round, 6-way round, 5-way flat, and 4-way flat. We can also provide adapters between connector types and custom configurations for specialty applications.
Yes, our trailer lighting harnesses are designed to meet DOT and SAE requirements for trailer lighting. We use appropriate wire gauges, color coding per standards, and connectors rated for the intended current loads to ensure roadworthy installations.
Trailer harnesses use UV-resistant wire insulation, weatherproof connector housings with sealing, and tin-plated terminals for corrosion resistance. For exposed routing, we provide abrasion-resistant jacketing or corrugated loom protection.
Yes, we manufacture custom trailer harnesses for utility trailers, RVs, boat trailers, horse trailers, and commercial applications. Custom harnesses can include additional circuits for accessories, custom lengths, and specific connector configurations.
Need Trailer Wire Harnesses?
From lighting circuits to brake controllers, we manufacture weatherproof trailer harnesses for reliable towing.