[cebra]

I have searched for hours on this and find similar threads even one title Ford Windstar E-fan wiring but it is showing a off/on type fan. Here is what I have:

LS with Standalone Harness: 2 wires (Lo and Hi)
Ford Windstar E-fan: 3 wires (blue/blk/blk) on each fan; I assume this is Lo/High/Ground in some order

I am trying to figure out how to wire relays for 3-prong fans, I see a ton of information on 2 prong dual fans. To add more complexity, I will be adding vintage air in a few months and will need to wire a trinary in as well. I found this and it is the simplest I have seen but for dual 2-prong fans.