New to Trillium

[JerryDW]

Hi, I’m Jerry and my wife is Shannon. We have a 1973 trillium 1300. It’s a very clean unit with a few small issues. We are planning to modernize it a bit, add batteries, inverter, new interior doors and some plugs and switches. I’m a long time carpenter that can tackle pretty much any job. Right now I’m trying to figure out if it’s possible to rerun a new 110 wire up behind the stove to the upper cabinet. The original works, but it’s been tapped into at some point and is a couple inches shorter( plus it’s age). I’m replacing the octagon pull boxes with plastic version as the originals are a tad rusty and corroded. Can a small hole behind the backsplash be drilled from underneath to get from the lower cavity to the cavity behind the backsplash?
Thanks, Jerry