12 volt power in the cab all the time?

Want to have a 12 volt on all the time to run a inverter or charge and power stuff.

Was looking the best way and place to run it on the truck.
Is there a hole or place in the cab say under the seats front or back.
Do not want to route it under and around much stuff. If needed just drill a hole under the seat and use a rubber bushing around the wire.
Was thinking That I could run a 10 gauge hot back and threw the floor and then run the ground to the frame or seat mount so as not to run two wires from the battery.

On my old trucks I just ran the 2 wires and added a fuse at the battery.
Several others I hear are just running one and the ground to the seat frame.

I can not use the normal 12 plugs as they will not pull what I need and would need to do the fix anyways to get them to stay on....

So was there a place that was best that people have run them.
Thinking in line with the frame to protect the wire and under the driver seat for easy reach and have 2-3' loose in the cab.

What you think?

 

To prevent a short, I would run the "hot" wire through a grommet in wire loom or plastic conduit back to the battery. I would fuse it at the battery. The truck frame will make a better ground than a seat frame. The wiring sizing will depend on the maximum electrical load and cable length. Depending of their efficiency, inverters consume 12 to 14 amps of 12 VDC power for every amp at 120 VAC produced.