Update. With a copy of the cruise control wiring diagram from fellow brickster and a connector from an old turn signal, the system is fully functional.

Thanks for the help!!

Ihcss--Have been messing with my cruise control for the past two days, exchanging one out of my 97R with one I took out of a junk yard for ten bucks to make sure it works. There are three wires coming in to a round-shouldered connector with a flat bottom that plugs into your vacuum control. Obviously some jerk took his side cutters and cut the wires rather than unplug it from your car. What you're going to have to do is go to a wrecking yard, find your vacuum control on the underside of a battery tray from some totally mangled junker, and cut the wires so you have a plug that you can plug into your vacuum control. This means taking three of those little pink connectors that you crush with a pliers (they are the smallest--don't use the blue ones) and hook your newly acquired connector to the three wires (taped well with electrician's tape because of the acid that drips down from the battery) so you can plug it into your vacuum control. Only way to do it. Dick

Neither VADIS or the Haynes Repair Manual have the diagrams. In fact, Haynes says that since such is not available, that this should be something referred to the dealer. My suggestion (unless someone here is knowlegable and answers) is to find someone with an 850 (I'd say they are all the same) and take a look at how their's is set up...of course, gaining permission to take some part apart, or go to a good indie mechanic who has done this procedure before.

Good luck.
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1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon