E30 Zone

hi everyone hope someone can help me i have a 1990 e30 316i with a little bit of a electrical fault my wipers wont work nor will my horn or indicators are the three in anyway related and is ther a quick fix i have checked the fuses and they are all ok please if any one could help i would be very greatful if you have any wiring diagrams they would also be very much appriciated either list it on here or e-mail me

leetalbot@yellowstone01.karoo.co.uk
mad_malc_is@hotmail.com

thanks everyone lee