Need knowledge from people smarter than me.

Got a 2019 Polaris Ranger 1000XP and trying to get it running agin if able. It was in a flood on the coast and from my knowledge was just about completely under water. Been piddling around with it for a day and the instrument panel lights up and works power steering works and all fuses and relays are getting power but there is no power getting to the lights, ECU, fuel pump, or any sensors on the motor. Checked the wiring harness and connections and all seem fine going to dig deeper into later just trying to get some ideas on things to check or if it is truly a lost cause.