I have a 1993 Ford Club Wagon Chateau (e-150). On the passenger-side frame rail, about halfway between the wheels, I see this little, black box mounted there and with an electrical conduit connected to it. It’s about an inch and a half on a side. The alphanumeric labeling is “F2UB-14A685-AD 3362BPWAX.”
It appears to be one of the crash sensors to trigger air bag deployment.
The arrow would indicate it is an accelerometer and direction of install matters.
NEW - Out Of Box F4UB-14A686-AB Front Left Air Bag Crash Sensor 92-94 Ford E150 NEW - Out Of Box F4UB-14A686-AB Front L… $29.99