I'm doing an install of a bumper sensor WITH horn activation if someone parks too close so need to tap into the horn wire in the dash.
I've been told it's in the small yellow connector in the steering wheel connector (pic1 below with my part number: 1J0 973 605 F) & seeing as I've got the whole dash out for a Climatronic upgrade I can easily get to more wires so am trying to find.
Now, my steering wheel is a four spoke with audio controls on so this has confused others as there should be 4 wires normally (obviously my 5th is the audio signal) and I should be looking for Brown/Blue for the horn but all I've got is a Black/Blue wire so I've hit a bit of a brick wall so what do you think? I've listed the wire colours below so match this up with any knowledge you have or even let me know if the wire is elsewhere near here (yeah, I know there's one by the horn!).
Let me know what you think as need to get this done asap as putting the innards back very soon so this easier chance to find this wire won't be here forever for me...
The car's a 2003 1.6SE Petrol BCB if that helps?!

Wire no's & colours:
1: Green/White
2: Brown
3: Black/Blue
4: Pink (or Grey?)
5: Yellow