Glad you found the CC solution. I struggled with mine for quite a while... changing parts, etc... eventually I realized it was working, but a ‘97 doesn’t have any indicator lights. Sometimes I even use it at 30mph in town so I can focus on more important things and not have to watch the speedometer.
FYI (and others), I found the parking brake switch can be a source of intermittent CC issues. Other things to check (which you’re likely aware of)... rear wheel speed sensor (if it surges), clock spring, switches on wheel (source of your problem), sensor on bottom of Master Cylinder (my ‘97 was replaced free under recall for possible fire hazard).
On the matter of recalls, check your van at Ford’s website. I had a new CPS (Crank Position Sensor) and M/C sensor replaced free of charge because they’d never been addressed in the last +/- 10 years since Ford decided they could potentially cause trouble. It’s a pleasant surprise to be able to get the dealership to do free maintenance on your rig...
given nothing is free these days... especially at the dealership. They’ve got so it’ll usually cost at least $100 just to walk into the service department... and $500 if you need anything done.