Welcome to TRS
If you plan on keeping the 1997 Ranger then I would get a 1997 Ranger EVTM, like this one:
https://www.ebay.com/itm/164152271317
This is the electrical manual Ford sends out every year for every model to every Ford Dealer Shop
Its part of the "Factory Shop Manual Set" and often sold separately
And when you sell your 1997 you can sell the book on ebay again, that's who is selling it now, a former 1997 Ranger owner, lol, so basically its free
EVTM has all wiring for all Ranger models and all options, wiring diagrams AND locations of these wires and ground points
Very handy to have one of these for a 24 year old vehicle
I don't have a 1997 Ranger so can't tell you where the fog light wire would be or even IF they are there
Every year would be different so the fact you have the fuse and relay is a good sign, but that may be all there is