83 XL600R; previous owner has cobbled up some sort of mod such that there's no battery in the bike. bike worked for a while and now no longer starts. doesn't seem to be getting any spark. when the bike was running the idiot lights would flicker (oil, etc) but now nothing. thinking either a main fuse has gone or something has come apart with the battery delete wiring. what should the battery delete circuit look like? what fuses should i check, etc? i'm a noob idiot - thanks in advance for patience. tried the search feature to no avail. help?