Which pin supplies power for the ABS warning light on a 7-way plug?

The supply of power for the ABS (Anti-lock Braking System) warning light in a 7-way plug configuration is specifically routed through Pin 7, which is typically a Green/White wire. This wire is designated for the ABS warning signal, allowing it to communicate the status of the braking system to the vehicle's monitoring system.

In many vehicle wiring designs, the use of a specific colored wire indicates its function; in this case, Green/White is specified for ABS operations. The importance of this component lies in ensuring that the driver is informed of any issues within the braking system, as it is a critical safety feature.

Each of the other pins serves different purposes related to trailer lights, brakes, and other functions, which is why they do not supply power for the ABS warning light. Thus, the correct identification of Pin 7 as the Green/White wire aligns with standard wiring practices in many vehicles, ensuring that the ABS light operates correctly to maintain safety during vehicle operation.