IF you have an original electric wiper motor, the switch is inside the motor control, I thought 1/2 and 3/4 tons had vacuum wipers, was your truck changed to electric before you acquired it?
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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