I did some searching around and ironically found this pic that VetteVet had posted in another thread awhile back.
While I'm not interested in mounting the battery in the back of the truck, it looks like they are using a bus-bar (like Gmachinz said) and have the sensing wire, the battery wire, and alternator feed all on the same post. Does anyone see anything wrong with that? I guess the big amps will find their way to the battery if needed?
I found a similar looking bus bar here:
https://www.amazon.com/BUSBARS-4-Pos...ustomerReviews
Unless someone sees something wrong with this, I may just go this route as it will give extra "hot" posts for the electric fan relay mains.