This is the adapter you need to wire up a bose setup
Red & White RCAs are front L&R Black & Yellow are rear L&R
Follow the link I posted and you will have no problems I promise, only thing that is HU specific is the steeting wheel adapter, the small cable that plugs into the loom and has a 3.5mm plug the other end, some units have slightly different connections on the rear some wires are integrated into the loom some not but if you do everything logically then you will be fine
If not bite the bullet and get someone to do it for you, should only be about £60-£70 to fit a unit if you have all the cables etc, I know its nice to do it yourself but really not worth all the pain sonetimes