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  • Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector
  • Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector
  • Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector
  • Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector
  • Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector
  • Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector
Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector
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Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector

  • 500 - 999 Pieces
    $3.50
  • >= 1000 Pieces
    $3

Customization:

Customized logo（Min.Order: 3000 pieces）
Customized packaging（Min.Order: 3000 pieces）
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Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Power & Signal Transfer: Designed to securely connect trailers to vehicles, enabling power distribution for lights, brakes, and accessories through 2-pin, 3-pin, 4-pin, or 5-pin configurations.
  • Universal Compatibility: SAE-standard connector ensures seamless integration with diverse trailer and vehicle systems, supporting both basic and advanced electrical requirements.

Key features

  • 1. Durable Material Technology

    • With corrosion-resistant PVC and copper contact materials, you can ensure reliable power and signal transfer in harsh outdoor environments. The copper core guarantees optimal conductivity, while the weather-resistant PVC housing withstands vibrations and exposure to elements like rain or dust.

  • 2. Modular & Secure Design

    • With a flat, compact shape and locking mechanism, you can achieve quick and secure connections for trailers. The modular design allows easy attachment/detachment, reducing setup time compared to bulkier traditional connectors*.

  • 3. Universal Compatibility

    • With 2- to 5-pin configurations (including 4-pin SAE compatibility), you can adapt to diverse trailer and vehicle systems. This versatility outperforms single-pin models, supporting applications like brake control, lighting, and accessories*.

  • 4. Commercial-Grade Performance

    • Designed for continuous operation in commercial and home-use scenarios, these connectors handle high-power demands for trailer brakes, lights, and accessories. Their dual-core structure ensures stable performance under heavy loads compared to single-core alternatives*.

  • 5. Certified Safety & Compliance

    • With CE certification, you can trust compliance with EU safety and quality standards. This ensures reliable performance and peace of mind for both personal and professional trailer setups.

Product details

Trailer Wire Plug 3 4 Way Flat 5 Pin Universal Wiring Harness Connector 4pin SAE Connector

The Trailer Wire Plug 3/4 Way Flat Universal Wiring Harness Connector is a versatile, weather-resistant solution for trailer-to-vehicle power and signal transfer. Designed with durable PVC and copper components, it offers customizable pin configurations (2p, 3p, 4p, 5p) to meet diverse trailer and vehicle requirements. CE-certified for safety, it ensures reliable performance in harsh environments.

Technical specifications

FeatureSpecificationBenefit
MaterialPVC casing, copper contactsWeather-resistant and corrosion-free
Pin Configuration2p, 3p, 4p, 5pUniversal compatibility with trailer systems
CoresDual-coreEfficient power and signal transmission
CertificationCE-compliantGuaranteed safety and performance standards
ShapeFlat, modular designEasy installation and space-saving
Locking MechanismVibration-resistant locking systemSecure connections during transit

Customization guide

Adjustable pin configurations (2p to 5p) allow customization to match specific trailer requirements, such as brake systems or lighting setups. The modular design enables quick assembly for different vehicle-trailer pairings.

Get inspired

Whether you’re towing a boat, camper, or utility trailer, this connector ensures seamless power and signal transfer. Its weather-resistant build and CE certification make it ideal for outdoor and commercial use.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Pin Compatibility2p, 3p2p, 3p, 4p2p–5p
Vibration Resistance5G8G (+60%)12G (+140%)*
Temperature Range-20°C to 80°C-30°C to 90°C-40°C to 100°C

Supplier's note

  1. Technical Breakthroughs:

    • Copper Contacts: Enhanced conductivity ensures stable power delivery even under heavy loads.
    • PVC Enclosure: Tripled weather resistance compared to standard rubber jackets, protecting against moisture and UV damage.
    • Modular Design: Quick-swap pins reduce downtime during trailer upgrades.

  2. Version Selection Guide:

    • Base Model: Ideal for casual users needing basic 2p/3p connections (e.g., light-only trailers).
    • Advanced Model: Best for commercial users requiring 4p setups (e.g., trailers with electric brakes).
    • Pro Model: Engineers and heavy-duty operators benefit from 5p versatility and extreme temperature tolerance (-40°C to 100°C), enabling use in Arctic or desert conditions.

With the Pro Model’s 12G vibration resistance, you can safely tow cargo over rugged terrain without risking connection failure. Pair its 5p configuration with advanced brake systems for unmatched control.

Frequently asked questions

  • Which trailer wiring connector model suits small trailers or RVs?

  • How do I clean and maintain trailer wiring connectors?

  • What materials make these connectors durable for outdoor use?

  • Can I customize the pin configuration for my trailer’s specific needs?

  • Are these connectors CE-certified for safety compliance?

  • What’s the difference between PVC and rubber wiring materials?

  • Are these connectors compatible with all trailer types?

  • How does the locking mechanism ensure safety during travel?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Connector Pin ConfigurationTrailers with electric brakes, lighting systems5-pin SAE (Industry: 4-pin ▲)
(Supports advanced features like electric brakes)		▲ Advanced: Adds dedicated brake circuit pin for safety.
Base: 4-pin for basic lighting/power		▲ Advanced: Requires compatible vehicle systems.
Base: Limited to basic functions
Material CompositionHarsh outdoor environmentsPVC+ Copper Core
(Passes ASTM D480 weather resistance test)		▲ Advanced: Reinforced PVC for -40°C to 85°C durability.
Base: Standard PVC (-20°C to 60°C)		Higher cost for Advanced due to premium materials
Certification ComplianceGlobal market deploymentCE Certified
(Meets EU electrical safety standards)		▲ Advanced: Adds UL 486A/IEC 60309 certifications for international useBase: Limited to regional compliance
Electrical ConductivityHigh-current applications (e.g., LED lights)Copper Contacts
(Resistance ≤ 0.018 Ω/pin per IEC 60839)		▲ Advanced: Gold-plated contacts reduce corrosion (vs tin-plated Base)Gold plating increases Advanced cost by 20%
Weather ResistanceMarine or industrial trailersIP68 Rated
(Submersible up to 1m for 30min per IEC 60529)		▲ Advanced: Silicone seals for saltwater exposure.
Base: Standard dust/waterproofing		▲ Advanced: Bulky design may complicate installation
Modular CompatibilityCustom trailer setupsPlug-and-Socket Interchangeability
(Adapts to 2p/3p/4p/5p configurations)		▲ Advanced: Quick-release latch for frequent reconnections.
Base: Screw-lock mechanism		▲ Advanced: Requires proprietary adapters for legacy systems

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