there are so many ways that you could do it... just make sure that you do your research before hand ie. wiring diagrams, advice from other SAU'ers, etc and be patient... dont get excited thinking that ur gonna cut all these wires and its just gonna work. plan what you want to do, get all ur parts (switches, cable, relays, etc) then give urself a free day and do it... there is no need to rush it cuz if u do, ur heaps more likely to fu*k it up...