[CPJexr]Where to get the signal of steering wheel controls

Knowledge Note KN1044 CarPC JoyCon Exr(Ex) Where to get the signal of steering wheel control? When you install CarPC JoyCon Exr(Ex) on your vehicle, you need to get the signal wires of steering wheel controls. There is two point where you can get the signal wire for CarPC JoyCon Exr(Ex). 1. From clock spring 2.