I hate electrical problems.... charging

71 dart 318/dual w/ glass pacs/holley 600 cfm/edelbrock performer/904. electrical problem.....battery dies right before my eyes... short? when middle bulkhead connector is pulled it stops. middle bhead has fusable link and starter relay wire (same thing?) and i think it goes to fuse box..steering wheel droped to seat, cluster pulled out...volt meter or starter relay bad?