Go through the fire wall. Insulate the wire very good. A short in a 12 volt wire will melt it down

If I don't blow up the truck in the process I'll try to post the results of the project.

My hunting truck Tundra came with a Undercover bed cover, which is a hard one piece. I am going to attach these right to the cover so when I lift up cover the lights will be above my head shinning down.

I would consider mounting the switch in the bed, where you will most likely be when you want bed lights. You could have two switches controlling them, but that’s a little more complex circuit. Led bed lights are unlikely to draw a lot of current, so I would just drop a fused hot wire off of your battery (this is also make them able to cut on regardless of ignition switch position) to the bed, switch the hot lead, and get your ground.

Those are very bright. Does yours have the motion sensor and auto shut off on it?

I'm with Odo on this. A switch in the cab is asking for a dead battery (if not a daily driver). A switch where you are working is simply more practical anyway. To each his own I suppose.