cosb6

Hello Everyone, I'm new here, and like most new people, only have joined as I have a problem. I will however, try to help others out to repay the favour I'm about to ask. We have a Mk2 Xsara (Y Plate) 1360cc, and have a problem with the battery going flat. Having measured something is drawing current, I've been around the fuse box removing fuses 1 by 1, and have managed to diagnose the issue relate to one of the MAXI Fuses, number M11 which is 32A. I've tried to remove under-dash fuses 1 by 1, but with no joy. The only thing that stops the battery going flat, is the M11 Numbered Fuse. The manual is no use, and with no Haynes Manual details, I need some help. What is the fuse for? How can I find out? Thanks in advance... Stuart