This is a great post, just done it myself over the weekend, alot of screws make sure you have a good philips screw driver! Plus don't do it in the dark like me.   
Apart from that, sounds really good. 
not sure if i should have cut the wire to the motors or not, turn up the music and i can't hear it anyway   
  
Just need to finish off putting the wire to the armrest, hopfully that will be easy.