Interior Electrics Dead!

Hi I own a 1991 BMW e34 525i se auto RH drive. Just recently the interior electrics have started playing up. When the car has been driven for a few miles the electric windows, interior lights, alarm, c/locking, windscreen washer all stop working even though the dashboard lights/instruments, and engine, exterior lights are unaffected. When the car has cooled down it all starts working again? does anyone know which relay or master fuse (perphaps a crack) controls all this lot?

Thanks

Rich

id check out the connections by the battery, if your battery is under the hood the fusable link is on the wire that's held to the + cable with a 10mm, it's usually under a plastic cover on the strut tower, if the battery is under the seat the link is back there

i'll have a look, I was to busy looking at fuse boxe to realise there was a fuse near the battery.

Thanks