looks an easy install, hardest thing is sorting out the wiring:-
Easiest way is to remove the wires from your multiplug and change there slots to match the B5.5 lamps
i.e. take no.4 out and move to no.1 slot.
The multiplug has numbers on as standard.
New Lights ___________ Old Lights
Driver side / O.S._________Driver side / O.S.
1 Brown - Earth______ 1 Gry/Yel - fog
2 Gry/Whte - Fog_______ 2 Red/Blk - brake
3 Blk/Grn - Indicator_______3 Green - Indicat
4 Gry/Red - Side_________ 4 Brwnx2 - Earth
5 Red/Blk - Brake _________ 5 Gry/Red - Sides
6 Blu/Red - Reverse_______ 6 Blu/Red -Reverse
Passenger side / N.S:-____ Passenger side / N.S:-
1 Blu/Red - Reverse________1 Blu/Red - Reverse
2 Red/Blk - Brake________ 2 Red/Blk - Brake
3 Gry/Blk - Sides________3 White - Indicator
4 Blk/Whte - Indicator______ 4 Brown - Earth
5 Spare - x ________ 5 Gry/Blk - Sides
6 Brown - Earth ______ 6 Gry/Yell - Fog
My old multiplug colouring cables maybe slightley different to yours as I have a genuine VAG towbar loom fitted.