What wires are steering wheel controls?
There are two wires used for steering wheel controls. Each interface (either stand-alone or as part of a multi-function product) has one blue/yellow wire and one black wire with a stereo-type 3.5mm plug. Both wires accomplish the same purpose: transfering the SWC signals to the radio.
What is SWC output wire?
SWC is an acronym standing for Steering Wheel Control. An SWC interface is a module that connects a vehicle’s OEM steering wheel controls with an aftermarket headunit or radio replacement unit.