front windscreen washer

My windscreen washer only works occasionally and when it does work it sometimes sticks on. I have checked that the water is not frozen and taken the indicator switch apart and cleaned the contacts. All of the wipers/rear washers are fine..i think it is possibly the switch/contactors in the wiper arm that are gone but not sure..if it is this can i just buy the contacor bir or do i have to get a new arm?...any ideas or help will be great....

The best way is to go to the Ford dealer parts department. Sometimes they do carry brake down parts.. If they have it or can order it you can get it. I am lucky here I have 2 ford dealerships so they try to under price each other... If you have this advantage check in with them.