Thanks for the link HB. I had found this one which is a lot cheaper but looks a bit shitty:
http://item.taobao.com/item.htm?id=7334605329

For switches and cables there's this shop which sells all sorts of badass switches for car instrument panels:
http://jhtcp.tmall.com/

Final question: if i was to install an in line fuse, what rating should it be?