I will be removing the light levelling parts if anyone is interested.
These are not needed on my SC430.....different fixed lights were fitted.
but these videos might help others.
Fuse 21 - https://www.youtube.com/watch?v=tsTtv_enqkc
Replacing the level motor - https://www.youtube.com/watch?v=TD79Rv85l4w
Level sensor - https://www.youtube.com/watch?v=FVLpf2SVusI