grounding

Not new, by any means, to building my lighting and have ran numerous lights both rock lights (KC Cyclone V2 10 piece), light bar (KC Flex Era 20”), A-pillar (KC Flex Era 4) and upgraded to KC Flex Era 3 SAE fog lights (factory fog light switch)…. It was definitely easy with the central grounding...

Wondering what folks out there have done to organize their Aux Wiring under the hood (behind battery)? Right now I have tidied everything up but would love to know if there is some sort of box or just better organization than connecting the wires together and grounding on one or two...

I dont have the tow package and I can't seem to find the bolt size for it. If anyone knows let me know.