Well, has it got a tow bar now, or has it been removed? There is a fuse for the brake lights and it is number 38 (Fuse rating A, Red).And on some models it also operates the cruse control and information display. Check the fuse first and if there are still problems, then e-mail me, trit666@hotmail.com .
Kind Regards
Tristan Hanwell, April 2006