G'day
I am having an issue with my wiper blades, for some reason whenever the truck is on/running the wipers are on and the stop at the top rather than the bottom. Does anyone have any thoughts what could cause this?
Derek

1990 F-150 4x4 Lariat

 

I'm not familiar with Ford wipers wiring yet, but have you replaced wipers relay lately? There is a possibility that it was rotated by 180° during installation