Schedule E Trailer Wiring Diagram.pdf

This is a technical specification document for trailer wiring systems used in non-tractor/trailer, non-ABS truck applications. The document presents a standardized wiring diagram that establishes color-coded terminal assignments for electrical connections between towing vehicles and trailers. The specification designates eight primary wire functions: black for key-on power (Terminal #2), white for ground return to the towing vehicle (Terminal #1), brown for tail lamps and marker lamps (Terminal #6), blue for electric brakes (Terminal #7), yellow for left turn directional and stop functions (Terminal #3), red for stop lamps in four-lamp systems (Terminal #4), and green for right turn directional functions (Terminal #5). The diagram references the Standard J560 Connector specification and was last revised on March 4, 2015. The wiring schematic is viewed from the wire side of the plug connection.

This technical document does not contain pricing information, set-aside provisions, incumbent vendor details, funding sources, or contract award dates. It functions purely as a standardized engineering specification for trailer wiring configurations applicable to state and local procurement of towing and trailer equipment or services. The document establishes baseline compatibility requirements for electrical connections to ensure interoperability across multiple vehicle applications and vendor sources.