Keeps blowing fuse that keeps it from starting

Hello, You will have to follow the circuit for that fuse, and identify if there is a damaged, melted, open or short wire causing the excess amperage through the fuse. Also, you may find there is significant corrosion at a connector for that circuit as well. If you use something like alldataDIY.com, you can identify every location that circuit goes through so you don't have to tear wiring looms apart.