This cruise control vacuum switch is controlled by the brake pedal . It has a vacuum line to it and an electrical connection . This switch is mounted above the brake light switch , so the upper of the 2 switches on the bracket. When brake is applied the vacuum switch releases vacuum deactivating the cruise control . Question what is the electrical connection on this switch for ? is it just another way to cancel the cruise control ? Does removing this switch affect anything else other than cruise control ? The vacuum fitting on intake manifold for the cruise control has been capped off . the car is a Canadian certified 1982 Delta 88 , 307 with TH250C trans