olds 307 and 403

I had this set up on my 88 CSC. I had it engage but it didn't properly disengage, needed to turn off the switch, brake pedal just gradually slowed it down, reengaged once the foot is off the pedal. It should function but what wires go to the brake pedal switch where the vacuum line comes in? I have no wires to the two terminals on the vacuum pedal switch. Thanks.

cjsdad

Is it factory or aftermarket? If it is aftermarket, you might be able to google the wiring diagram. If you post the brand and model I may be able to help, I still have some of the manuals from when I was installing cruise controls. If it is factory you should be able to get the wiring from the service manual.