I just discovered (pun intended), that when the turn indicator fuse (15A) blows in the Disco 1, you will lose power to the brake switch. This leaves you dead in the water, lights on, with the engine running in park, as the brake switch needs to be active in order to unlock the transmission. Have fun troubleshooting that!. Now I remember why I grew up hating British electrical engineers and guess what I do for a living...