I got the fans to work by jumping the switch; they don't work otherwise because the clutch doesn't engage. And you're right, it is an electrical problem. I thing it may be a relay, but I don't know which one provides 12v to the switch and the clutch.

Max

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M. Sandler

1986 560SEC: 150,000 miles, runs great, but I've got to sell it (too many cars for one man)
1987 560SL: 122,000 miles, used to run poorly, now (thanks to forum), runs great!
1997 GMC Jimmy: Turned out to be a turkey.
1989 T-Bird Super Coupe: 150,000 miles, still runs great. Ford got it right.