My 95 bmw316i keeps blowing fuse not sure if its

Sounds like a live wire short. Check all cabling from fuse, motor and switch.look for open or damaged cable insulation.
Remove wire harnass from switch and fuelpump and see if fuse still blows, then definite short. If not connect switch only and see if fuse is still intact If so connect fuelpump. If fuse blows then defenitly pump

yor fuel pump is more likely to be defective and this can checked by connecting a mulitimeter and checking the current draw on operation should not exceed 3 amps