Hi deaftonewonder did you get it sorted as I now have the same issue with my w reg 130 td5 and I'm pulling my hair out ive fitted new earths to front and rear lights had truck in bits to no avail my hazards work I've got full beam ie I can flash at people I have brake lights but no side/main lights I also noticed today if I turn lights on it activated alarm sounder but if I brake sounder stops but kicks in again as soon as I stop braking cheers will from Norwich