Agreed, I would slo charge the battery back up (if it ain't already) & replace the fusible link then (eng off) with all lights etc off including doors shut pull off a batt cable from its post after dark & see if there is a spark which if so would confirm a short somewhere that is drawing current & with everything off nothing should be "on" & drawing current or in the daytime switch your meter to the highest DC amp scale & work the meter amp scale setting downward with the probes on the batt post & the cable & should be no flow. Holler back.