I would get out my digital voltmeter hook to ground and probe the batt then the B+ terminal then the fuseable links etc. A short blows fuses not an open circuit if a B+ junction has a bad connection it can leave you with no veh power . If a fusible link blew you may very well have a short.If you suspect a fusible line pull on it if it stretches its burned open also if there is volts on one side and none on other its open. But if you dont have experience with volt meters you need to find someone. But you need to check voltages to see where the voltage stops flowing then figure direction from there. good luck