Application Note AN1052 How to use VW(Volkswagen) MFSW both for CarPC and Stereo CarPC JoyCon Exc + BSGc(Button Signal Generator CAN) 1. Wiring The signal of VW(Volkswagen) MFSW is CAN. You can get the CAN signal at the radio jack. Intercept the CAN wire with CarPC JoyCon Exc and BSGc. 2. Setup of CAN steering wheel