cgcrute

I need to install a new stereo into my fiancé's MK2 Fabia. I did a test fit of the head unit tonight to ensure I've got all the connectors I need and it all went well. The only thing I didn't expect was that some functions were unavailable when the hand brake was off. This is sensed using a single wire. The manual entry for the hand brake wire of the stereo is attached. What I need to know is which wire on the switch do I connect this to. Logic suggests this is simply a ground connection it is looking for so I need to connect to the opposite side of the switch (live). There is a brown/green wire and a blue wire. If it is a simple ground I know I could just permanently ground it but my fiancé is exactly the sort of person this safety feature is there for 😂 Anyone advise me?