keep blow 50 amp fuse on 1992 Toyota Paseo

firstly i was driving and the engine just cut out , after some fault finding i reaslised the noise suppreer had failed i replaced the coil and dissy cay.
now the car wont crant and keeps blowing the 50amp fuser werre to look i cant find the short???? help

Asked by for the 1992 Toyota Paseo