Hitachi EX200-2 Diodes

Hello I am back again and need some help. I recently employed the services of an electrician to installed a alternator which I gave to him days before in order to make sure that everything was OK with it. After the site visit and he left I notice that I have no monitor lights on start up and cant rev the machine so I disconnect what he did and reinstall the old alternator and fuses that was burnt and was able to rev the machine to move it.

There was only three lights on the monitor...

Hitachi EX200-2 Diodes

Hitachi EX200-2 Diodes