Rear Reclining Seats not working

[BMWx5e53]

Hi All,

I am trying to retro-fit reclining seats to my BMW X5 e53 4.8 2004. (U.K car)
I have installed the motors and the swicthes (tail gate ones) but nothing happens.
The 30amp fuse is present in position 77 in the fuse box above the subwoofer.
I have read the Relay swicth only need to be installed if I also use the roof swicthes.

I have the pan roof - i am assuming I do not need to do anything with the wiring (that is if it even exists up there)?

Do the reaer tailgate switches light up when the headlights are on? Maybe power isnt going to them?
Does this feature need to be enabled?

Any suggestions will be a good start.