I'm in the same boat. My '97 build sheet tells me my truck never came with fog lights. When I bought it, it had a replacement front bumper with the factory fog lamps in place, but no harness. Dash had no switches, just empty storage box.
I've located the fog/OD switches, (I have 5S, so will never need the OD switch).
Now I have to figure out if, "all," '97's came with most of the wiring harness in place or if I'm missing a major harness. I hope the basics are there and I can find some plug in sections. But so far, under the bumper I see nothing.
I guess I need to know if I need ALL the wiring, or if the factory always puts some in just in case.
???
Dennis
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1997 12valve, 4WD, 128,000miles, club cab, manual trans, dowel pin is fixed. Owned only since May, 2007.