Horn not working.

[GTI 500]

Hi guys, need some help please, fitted a mfsw (none DSG) to my 2005 mk5 Gti, got all the controls working, but now the horn wont work, i remember some thing on here about the air bag loom being different?
I have the CH control unit,
got 1K0 959 653 C SLIP RING,
      1K0 971 584 C AIR BAG LOOM,
But the horn still wont work?
Any help would be great.