G thx that really helps.
I am looking for a way to run a arb wiring kit from the battery to my right rear for my fridge. Since I have never done things like this before I was just looking for guidance. I have searched and read the many other related posts I could find but have not seen any specific enough for me to follow.
So I figure first thing is a way through the firewall....
Makes more sense now, most of us use the factory wiring grommet in the driver side foot well to route wires through the firewall.
*Factory grommet, Firewall, Driver side foot well, you may have to cut the rubber boot a but to get the wires through depending on bundle size. Also if there is a connector already on both ends of your wires that might make it tight also
*Down behind kick panel
*under door sills (front and rear)
*Into rear wheel well (can be a small pain unless you have long arms or a fish)
In your case you will have to cross over to the passenger side, I would do this in the back but it might require you pulling carpet. I put a switch controlled 12v plug in the storage tray on the rear driver side wheel well for the fridge. Pick up some plastic pry bars (interior panel pullers) and start taking things apart, best way to see what works and what doesn't.
P.S The reason for the 1st reply was A) it was late, I am a 9:30-10pm bedtime kinda guy and B) While I understand the context better with your follow up that's about as bad as the questions of "what size is this bolt"....O and here is a picture

out:. No harm, no foul