As you get older, there are things you decide just have to be certain ways, period.
In my case, there need to be always hot USB ports everywhere. There are about 10 in my house. 4 in my tow rig. 6 in my camper.
After a lot of trial and error, my favorite USB port is the Blue Sea 1039 dual 2.4 amp charger.
https://amzn.com/B01AHYC88A
There wasn't an awesome place for it, so I tracked down WizardPC over on ShapeWays and we put our heads together.
He built me a custom 3D printed switch bezel that has Blue Sea twistlock 12v outlet, 1 Blue Sea dual usb charger, and 5 jeep style switch ports.
It turned out super nice. He offers it for sale here:
http://www.shapeways.com/product/U7...-5-switch-1-bs1039-pass-pow?optionId=59373292
I didn't take a lot of pictures through this process. I don't really like doing electrical so I just pushed through it so not to be annoyed.
4 gauge on a 100 amp fuse from the battery to the first fuse box, which breaks off to the accessory fuse box and later to the stereo amps (I'll get there..).
8 gauge over to the accessory fuses.
14 gauge into the cab, up under the dash, and feeding both the 12v port and the usb ports. The extra switches are just filling holes for the moment, I'm not even sure what they will end up being in the long run.
All installed and ready to go!
If any of you decide to buy one of these and install, you'll want the 90* bend spade connectors, it is a snug fit.
https://amzn.com/B01GKFR09W
Here's the 12v outlet I used as well:
https://amzn.com/B001U4ZZPK