truck bed drilling hole to run a wire

where should i drill a 1 inche hole on my truck bed to run my cable from my engine bay to my leisure battery in the back. i was thinking using one the the tiny hole on the truck bed floor near the back panel to evacuate the water. is there a better way to do it?

 

What year truck?

 

Tacoma 2018 6 foot bed

 

I went through the bed storage compartment for power for rear winch.




and this on the other side for compressor and acc.

 

thank you