Here's how I think I did the fan relays. I ordered this kit from Ebay, that come with the weather seals and a weatherproof enlclosure that I discovered was too small for 3 relays:
https://www.ebay.com/itm/142669338161
You are going to need special crimpers for the Delphi Metri-Pack 280 series sealed female terminals and cable seals.
Since the enclosure in the kit above wouldn't fit 3 of the Micro 280 relays by Song Chuan I ended up getting this enclosure -
https://www.customconnectorkits.com/pdm-t3ac1/
I can't figure out exactly where I got it from(the place I linked seems cheap, but you could search the part number and find other sellers), but I had to order some more terminals and "blank" waterproofing plugs to fill all the empty holes.
I used the following fuse holder to feel the relay enclosure.
https://www.amazon.com/gp/product/B071CWH241/
Wiring the fan relays was not fun for me, because I had the front sheet metal assembled already and I was trying to keep the wires short and it was just a tight area.