So for getting or giving a jump you still raise the hood for the access to the positive terminal? That means one very long cable to the starter and we all know shorter is best for our spin rate. I also would caution that cables loose their insulation when scraped or pass through normally negative parts, even with grommets. I have seen such cables melt and spark and start fires on some fire suppression equipment in my day. Thought we were going to have to run an engine off the road to keep the molten metal from spewing down the road at 60 mph into all the dry grass on the shoulder. Quite a sight in the middle of the day.
Not sure I am sold on this idea for the battery to be inside the car. I know that now we don't have the open tops that need to vent and the risk of breakage is down. yada yada. But my upbringing and need to get to the terminals a lot seems to over ride my desire to move the weight around. Not when I purposefully have the back seat out and remove the passenger seat at times to haul lumber. Small side mount intercooler eh? don't see many of those on this forum. Just the whoopers, well of course, bigger is always better. Except for bills.
I see, that is where my setup fails. Open from the back of the drivers seat to the tail lights. I really need a heavy duty screen of sorts to keep stuff from flying forward in the event I need to stop in a hurry. Or get rear ended. Already have an instance in my life where my tool box became airborn and took the head rest off the passengers seat and then punched a perfectly clean square hole in the windshield on a Jeep I rolled. Very lucky dog that day.
So you are luck to have your head too? The cop that responded to the accident was impressed with the damage and the fact that I was calm as a cucumber. He was ready to call the meat wagon.