Parking brake wire - Pioneer avh-x5800dab

[Wookie]

Hi all.
I've just got the above unit and yet to install.

First question how do I bypass the parking brake lead so it will play movies when on the move. Do I have to buy that double pulse relay from America or are their any UK people out their that stock it? I take it the other option is a manual switch I'd have to flick a couple of times. I'm no good with wiring on modern cars would I just splice into its own earth?

2nd question theres alot more wires than I'm use to. Anyone recommend which way I should have all the power wires set to constant red and yellow ones.

3rd Also should I and how would I link mute to reverse?

Oh buy the way I have a b6

Thanks all