No DC power in camper to lights and fans. Checked fuses to all the lights and checked the 30 amp fuse all checked good. AC power is working fine. what should I check next.

Found the problem. The DC kill switch was turned off earlier while cleaning the camper.

Good on you! I was about to tell you to check the "Master Switch"! You are not the first, nor will you be the last, to have DC power failure due to this switch being in the wrong position.

- Jack

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Hi-Lo 1707T - Tire Minder TPMS on Tow Vehicle and Trailer, 300W Solar Battery Charger, Equal-i-zer WDH, Progressive Dynamics Converter, Fan-Tastic Fan, LiFePO4 battery 12V DC Electrical System
2014 F150 Platinum 4x4 3.5L EcoBoost SCrew

Dozens of us out here immediately had the same thought.

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2201 TL

2010 Nissan Titan king cab SE
4x4

I have the same problem where is the DC kill switch?

Kirk, it's the "Master Switch", that is located next to your Lift Switch. It needs to be opposite the position you have it in to raise or lower the top. It has three positions: Top Up/Down, Neutral (Middle - for traveling), and Internal - for DC power to the interior.

- Jack