Use the same switch for the front wipers. Once the front wipers are switched on, the rear wiper will come on as well. However, a reverse twist of the switch would turn on just the rear wiper.
According to a drawing in the 1997 Ford Escort Owner Guide : On the right side of the steering wheel column is a lever that operates the windshield wipers . On the inner part of the lever , towards the steering wheel , is a selector switch for the rear wiper / washer on the wagon
I would suspect either a short to ground in the circuitry, or excessive mechanical resistance from a faulty wiper motor.
The maximum speed of a 1968 Ford Falcon Wagon with a 6 cyl 116 HP motor was approximately 88 mph.
The least powerful 1975 Ford Falcon Wagon I can find had 130HP. It had a top speed of 153 kph (95 mph).
The maximum speed of the ford falcon wagon manual 6cyl 132hp 1974 is 340 kilometres per hour.
4inch
Plenty of antique car collectors want to buy a 1965 Ford Falcon wagon. Many people fix these vehicles up for car shows and even for racing.
The power of the engine and the maximum speed of the 1965 Ford Falcon wagon automatic are 105 hp and 144 km/h (89 mph) respectively.
19" left, 21" right.
153 kph (97 mph)
replace the wiper motor
The wiper control arm on the right of the steering column pulls forward to control the rear wiper. Push in the end button to spray wiper fluid. Push up to turn wipers on with arm pulled toward you. Push arm back away from you to return to front windshield wipers. Took me forever to figure this out as this was a work vehicle.