Which is the boot power socket fuse?

Hi all,

I am looking for the fuse that supplies the boot power socket, its definately not the one that supplies the cabin ciggy lighters and I cant find anything in the hand book that refers to which fuse it might be, I'm reluctant to pull the fuses to work it out cus nowaday you dont know what you might do! Just wondered if anyone had any idea, also I've been told that it can be used to supply tow bar auxillary electrics, is this so? is the fuse rated high enough? (thats why im trying to find it, I need a 15amp supply). Cheers BryanP