VW RCD510 STEREO UPGRADE AND DREADED BATTERY DRAIN PROBLEM PART 2

Have you upgraded your stereo? and now suffer the battery drain? If Yes - You need to identify the CAN + and CAN - lines that come out from your stereo. Cut them, and link them up to the climate CAN wires. I accessed these from the back of the A/C knob panel.

The car has serval different CAN buses. The newer stereos required the CAN signal from the climate CAN-BUS, the signals sent by the orginal CAN wires do not shut down the stereo completely.

Please bare in mind there are many different setups, colours used and different connectors. You would need to research your ones (search for "pinouts") Only make new connections when the power is off, and double check any new connections before powering up as it is fully possible to blow your electronics system. Hope this is helpful