Cadillac Repair: electrical, ebay motors, ebay website

Question
do you know of anywhere online that I could get a wiring diagram for a 1977 caddy deville? My dad is having some problems running down an electrical problem. The horn quite working and there is juice to it and the left front seat power quit, headlights don't work. All other lights work. Anyway I was hoping to find somewhere to get a wiring diagram online. If you could help it would be great. Thanks, D.

Answer
Hi Denetta, You could get on the alldata website and see if they go back to 1977. There is a charge for a 1 year subscription but might be worth it. Some other possabilities are copying some pages out of a dealer shop manual at the Caddy dealer, buying a manual at the parts store or going to the ebay website and do a search for the manual in the ebay motors section. Sorry I don't know of a free site online to get wiring diagrams. Bill