do you have a distribution point somewhere or are you just wiring EVERYTHING straight to the battery? your charging circuit should be completely seperate from anything else dash wise if you're running a single wire alternator.
id start by pulling the battery so you dont blow up. address the fuel issue first, its the most serious. once thats taken care start tracing each wire and what its hooked up to, where it goes, etc. knowing what wire is what helps a lot.