Gala Car Alarm System A4 1996

I want to install a permanent navigation system, and for that, I need the Gala signal. Where can I tap into that signal?

For a standard car radio with an ISO connector, connect to pin 1. Wire color: white/blue. At the instrument cluster, on the green 32-pin connector, connect to pin 30. Wire color: white/blue.

Or even more complicated.
In the engine compartment, on the splash guard on the driver's side. Directly below the windshield, near the water reservoir in the clutch station's electrical box. Brown connector. Wire color: white/blue.

Thank you.