Swisher XZT60 Blowing Fuses

[Daisy@25]

Swisher XZT 60, 25 horse, model-ZT2560 serial- L106-103106
My Swisher keeps blowing fuses every time I turn the ignition switch to start it they blow immediately. I have replaced the solenoid, ignition switch and chased all the wiring. I can't see any wires that are bad or misplaced. The battery is right as well.

 

[bertsmobile1]

Is the battery connected the correct way round ?
What was the last thing you did to the mower before it started to blow the fuse instantly ?
Have you removed the blower housing to check for animal damage to the wiring under the housing ?