brake light question

Hi lads & lasses.

I am at the dragons away from home & haven't the rave CD to hand.
The highline brake light isn't working but the bulb seems OK (no tester here either ) can anyone tell me if it's on the same line/fuse as the other brake lights & if not which fuse it is?
Disco 2
TD5
51'plate.

Thanks for any help.

Keith.

As the D1 high level brake light is I would think it's the same with the D2, it's just tapped off one of the brake lights in the tail lamp fitting.

Thanks Discool.
When I got home to have a proper look the bulb was OK & there was 12V at the terminals.
Closed the bit that holds the bulb in place so that it got a better contact & Bobs ya Uncle.

Thanks

keith

Well done Gran