No power dry camping

Guys thanks for all the posts. Yes I could have probably said more. Changed out the fuse right by the battery on the positive lead. Didn't look blown but checked anyway. Didn't help. Cables are hooked up to correct terminals. Cut off switch is on. Pulled the reverse polarity fuses. All ok. Still no power. It's ok as I am currently connected to shore power but will take to dealer when I get home tomorrow. Luckily not far from home as I don't like the idea of not having power to the break away switch.