Trailer Wiring Diagrams

4 Way Systems

Flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).

4 way tow vehicle side.

4 way trailer side.

5 Way Systems

Same as 4 way system listed above but adds a extra red or black auxiliary power wire.

5 way tow vehicle side.

5 way trailer side.

6 Way Systems

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (12v) and blue (electric brakes) may need to be reversed to suit the trailer. Check with a test light or VOM.

6 way tow vehicle side.

6 way trailer side.

7 Way Systems

Round 2" diameter connector allows additional pin for auxiliary 12v power or backup lights.

7 way RV flat blade tow vehicle side.

7 way RV flat blade trailer side.

Trailer And Vehicle Towing Accessories

Vehicle Specific Trailer Wiring Harness by make, model and year.

Trailer Adapters And Accessories

Taillight Converters

Trailer Cable And Wire

Trailer Lights	Hitch Accessories Towing Mirrors	Class 3 Round And Square Tube Hitch Assemblies	Multi-Tow Connectors
Class 1 & 2 Hitch Assemblies	Brake Controllers	Weight Distribution Systems	Draw Bars & Hitch Balls

Car Care / Maintenance	Cargo Management	12 Volt Electrical	Exterior Accessories
Gas & Diesel Performance	Interior Accessories	Lighting	Mirrors
Safety & Security	Air Suspension & Chassis	Towing Accessories	Truck Bed Tonneau Covers

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