There are 6 nuts that need to be unscrewed on the seat belt retracter.
It's up to you what order you do things in, but we got all the wiring in place first before actually fitting the sills.
The next step was to get the wire from the front of the car through to the fuse box. This is where an extra set of hands and eyes helps. We did use s flexible pole to feed the wire through - it has a small metal tip on the end so can force it's way through. This is probably the worse job of the lot, as there is a lot of wiring for it to get past.
I have small hands and wrists so was able to get right into the back left hand corner of the boot to feel the pole coming through. We tried feeding the pole from both sides (boot and passenger door) and when we managed to get the pole through - we then tapped the wire onto it!!!
The photo below shows the wire after we had got it through (taped to a white pole).
