hey there im having the similar problem i replace fuel pump replaced relay and keeps blowing the fuse!!
what fuse ? check that circuit for a short ( hot wire touching a grounded area )
Is my 20v fuse for my fuel pump, i was wondering is there's another stuff connected to this fuse like injectors?
Disconnect the fuel pump and see if still blows, if it doesn't, you have a short on the pump wires. If it still blows, then there's an issue with wires before the pump