I am not sure on the factory setup but below is some common information on how it should be setup.

The Breakers are under the dash at the top. I would think it would use one of these breakers or three of them. I have attached a photo for you. Take a light with you since it is hard to read what each breaker is for. Do you get a light on the switch when you turn it on? If so it is not a fuse/breaker issue. It is also not the the breaker on the G III switch panel if you get a light. The fuses/ Breakers should be before the switches. If you have a meter or just a LED light hook it up to were the empty pump plugs in and you will be able to see if you have power when you turn on the pump. All the pumps should have a quick disconnect close to were the pump is installed.

Hope this helps