2019 F450 looking for a key on power under the hood. Odd one

Well seems odd. Truck was up on the lift all day. I just lowered it to wire things up. Fuse was hot. I'll go out in the morning now that it's back on the ground and the hood is open and see if it powered down.

I could use the upfitter switches but there must be some place that I can tap for power when the truck in in use and off when shut down. I'll see in the am if your correct about fuses powering down.