See
I've got a 1998 Ranger. It appears that it has the switch that is questionable.
F-Series 1993-2003 Explorer without IVD 1995-2003 Explorer Sport/Sport Trac 2002-2003 Expedition 1997-2003 Ranger 1995-2003
The article states: "The switch is located under the hood of the vehicle and is attached to the brake master cylinder on one end and wired to the cruise control on the other. On most of its models, Ford designed the switch to be powered -- or "hot" -- at all times, even when the vehicle is off and the key is removed from the ignition. Inside the switch, a thin film barrier separates brake fluid from the switch's electrical components. Investigators say fires can occur when the film cracks and brake fluid from the master cylinder seeps into the electrical side of the switch."
Does anyone have any info or a schematic of this switch?