Is the solar system already wired to run whatever it can when not on shore power in the rv? If yes do I need to turn any switches to make it work? Sorry for my ignorance I have a TBI and sometimes instructions are not my best.
Solar will charge your battery(s) and run some low power 12v items. It will not power your 120v outlets. You need an inverter to convert battery power (DC) to AC power to power outlets.