Hi @ Dean Pugh,
Which fuse keeps blowing?
if it is the Stop/Hazard fuse, disconnect the brake pedal brake light switch wires from the switch and see if the fuse holds.
''If it holds'' then the brake pedal brake light switch might be faulty and earthing out through the body of the switch.
''If it still blows'' then there may be a problem in the hazard light switch, the wiring from the fuse to the hazard light switch or the wiring to the brake pedal brake light switch.