Originally Posted by sheps
I've had a quick look over the instructions also, and it sounds to me like you've got it spot on - unlike the Blaupunkt upgrade that gets its signal at the head unit, this upgrade taps in to the cables at the cill - therefore no dash work required.
Page 6 of the instructions has a table that shows what wires need to be tapped into and connected to the retro-fit harness. The final page of the instructions gives you a definition of colour code abbreviations.
If you're replacing the underseat subs with the SWS items we've spoken about, you'll need to slacken off the torx screws securing the seat in order to properly access and remove the sub enclosure. From what I've read you won't need to remove the seats to do this (just slacken the bolts and tip the seat out of the way) it would probably be easier to remove them fully.
Cool. Looks like the hardest part will be dismantling the trim.