Fuse/Relay block came in today. All except all the terminals that go into it and the mini relays I will be putting in the center section. This is a modular unit made by Little Fuse. They are called the powr blok system. I tried to use a cheaper unit from Online LED but the terminals were made for 14ga only and they were very flimsy. I tried getting a specification of the from the supplier but he told me they were proprietary terminals made just for them and he couldn't offer any better alternative. Since I will be using a mixture of 20 to 10 gauge wire, I will really need something real. Difference in cost is obviously enormous. The little fuse terminals are between $0.50 to $1.75 each plus you need special locking things for each wire. When you install about 45 terminals it adds up. Plus there are about 8 different part numbers involved for all the combinations of wire sizes and socket type and 3 or 4 combinations of terminal locks. In the end the Little Fuse unit will end up costing ~$150, If you get it right the first time, verses the Online LED unit for $20. I tried crimping a wire onto one of the terminals that came with the Online LED unit and I was able to pull it out very easily, because the terminal material was way too thin. Well you get what you pay for.
The first photo shows' the Little Fuse unit on the left and the Online LED unit on the right.. Second picture is of the Online LED terminals in the bags.
https://m.littelfuse.com/~/media/commercial-vehicle/datasheets/automotive-fuse-holders/powr-blok-modules-datasheet.pdf