After car PC installation, the steering wheel controls need to be connected to car PC or car stereo. You don’t need to give up car stereo for car PC. You can use your steering wheel controls both for car PC and car stereo. This document explains about the resistive controlled car stereos. See
Tag: BSG
[CPJexd]BMW IBUS interface both for Car PC and BMW OEM radio (E39 E46 E45 E38 E36 E37 E38(Z3) E53 E83)
[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.