The push button on the end of my turn signal stalk sucks. The washer pump doesn't run unless I push hard on the button. My 95 Mustang had a similar problem.

Is there an easy fix?

 

try spraying some wd40 or other lubricant in there, lots of times junk gets in there and when the lub is applied it cleans it up and normally works.
Good luck

Lance

 

Do a search on multi-function switches. they have been discussed a few times. Seems easy to take apart and clean.

https://www.ford-trucks.com/forums/s...unction+switch

 

Check this out for step by step instructions:

https://www.ford-trucks.com/forums/s...connectbattery

 

You dont say what year your truck is. My 99 F150 had a recall a few years back for the wiper switch. It would kick the wipers on for like one cycle out of the blue. Ford replaced the switch for free. Check the recalls section on here to see if it affects your truck.