Trailer Wiring Reference Chart

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Trailer wiring can be confusing so we have put together color-coded diagrams to help you out. If you have any additional questions or need any help don't hesitate to contact us.

7-Way RV Blade Traditional Configuration

7-Way Heavy-Duty Towing Configuration

RV Configuration Differences

7-Way RV Blade Traditional Configuration
Typically used on 5th wheel trailers, travel trailers, and campers.

7-Way RV Blade Heavy-Duty Towing Configuration (SAE J2863)
Typically used on gooseneck trailers, utility trailers, cargo trailers & equipment trailers. (***Wiring colors vary by manufacturer***)

Vehicle Side	Trailer Side

Vehicle Side	Trailer Side

Function	Color
+12 Volt	Black
Electric Brakes	Blue
Reverse Lights	Yellow
Left Turn / Brakes	Red
Right Turn / Brakes	Brown
Tail Lights	Green
Ground	White

Function	Color
+12 Volt	Orange
Electric Brakes	Blue
Reverse Lights	Gray
Left Turn / Brakes	Yellow
Right Turn / Brakes	Green
Tail Lights	Brown
Ground	White

7-Way Round

6-Way Round

6-Way Square

Vehicle Side	Trailer Side

Vehicle Side	Trailer Side

Vehicle Side	Trailer Side

Function	Color
Auxiliary Power	Red
Electric Brakes	Blue
Reverse Lights	Black
Left Turn / Brakes	Yellow
Right Turn / Brakes	Green
Tail Lights	Brown
Ground	White