Guys ive had a turbo buick for 24 years i had similar issues im working on a car for a friend the old killing the battery issue ive done the test light to neg side and touch the ground the lights on i took every fuse and wire so there was nothing on the fuse panel and lights still on i took every relay that i could find horn altenator starter im lost my car had a short one time it was at the wires down by the starter guys ive been working on cars a long time and built a bunch of fast stuff please give me something i can work with. every lights been pulled light sockets were diconnected every short ive ever seen will usually be traced to a fuse thanks