EQN-80B-2026.pdf

This is a technical wiring diagram for a 7-way round pin male connector (Model EQN-80B) prepared by the Pennsylvania Department of Transportation. The diagram specifies the electrical connections and color-coding standards for trailer lighting systems, with eight distinct wire functions: white for ground (10 gauge), black for marker lights (12 gauge), yellow for left turn and brake lights (12 gauge), red for stop/brake lights (12 gauge), green for right turn and brake lights (12 gauge), brown for tail lights (12 gauge), and blue for anti-lock braking system (ABS) (12 gauge). The connector extension must reach 3 feet beyond the pintle connection point. The diagram was drawn by JJB on August 2, 2016, checked and revised by KBD on May 16, 2018, with a final notation dated June 26, 2026.

This technical specification document serves as a standardized connector design for Pennsylvania Department of Transportation equipment and vehicles. The wiring diagram does not contain information regarding project timelines, bidding procedures, contract terms, pricing, or procurement details. The specification appears to be a reference standard for use in the procurement of towable equipment, such as the salt conveyor systems referenced in the related contract opportunity, ensuring compatibility and safety compliance across departmental equipment and vendor-supplied products.