Location to enter wires into cab under seat?

Looking for an area to enter the cab with some wires to add a few extra ports under the Drives seat or center armrest.

Going to be coming from the battery and want to make it under the seat or around the center of the truck.

Using a Battery Tender setup that has a mount to the battery, then a 12' cord that plugs to that and has all types of plugins that plug into the end. You can charge you battery with solar panel, use a USB port, 12 socket port or anything you want to wire to their plugs.
It also gives you a port under the hood you can plug to for lights, charging...

So I was thinking to follow the frame rail and come into the cab under the seat or some point close to that.
Anyone found a point to stick wires or just drill a hole and use RTV or rubber bushing?

Any thoughts?

 

Under the center console there is a rubber plug. Never have tried, take a look at it and report your findings!

 

Cool, can you take it out ( the center console ) without pulling a lot of other junk apart?
I think I seen something about pulling the liner and there are nuts under it?

Need to look and see if there is anything hot or moving that can catch the wires.