Body plugs on 2023 Tundra SR5 TRD OR

Hey everyone! I am looking to build a nice 2nd battery under the rear seat system and want to know if the 2022+ Tundra has any pre-drilled holes filled with body plugs. The only way that I am aware of that allows you to run wire from outside the cab into the cab is through the firewall on the driver side. I have googled this question, but found nothing. If anyone is aware of another way (besides through the firewall), I'd be greatly appreciative to know. Thank you!

 

On my SR5 I used the factory harness pass thru under the passenger side for 2 - 1/4 inch diameter cables.

 

Is there any way of sending a pic exactly where that is? Is it under the front passenger seat or the rear one? Thank againA

 

It's in the back. No pics available. Lift and lock the seat cushion. Remove the door sill plastic cover and then remove the large plastic panel that forms the pass side wall of the below seat storage area. There are 3 or 4 pushpins that hold the wall in place. One pushpin for the central section that abuts to the pass side It helps if you have plastic trim panel removal tools to separate the panels from each other. Everything pulls apart with careful use of brute force......

 

Thank you! I'd have never come up with all that!