In terms of a tree-like dedicated (hard wired) ground distribution system, this is a wiring example using distribution blocks.
This example is for a positive (supply-side) circuit. (I made this diagram for an article I'm writing.) The negative (ground- or return-side) would be the same.
Change the red wires to black. Change "From Source" to "To Source" and "To Loads" to "From Loads."
I made this diagram for an article I'm writing, on motorhome wiring. (I'm getting lazy ... could have fired up my CAD software, changed color and labels, exported to .jpg, and resized.)
Technically, it should be called a "ground collection tree" but everybody tends to used ground distribution tree.
I also used generic terms, in keeping with the article. Loads are things like ICMs, voltage regulators, lights, and so forth. Likewise, the source is your battery or alternator.
