Whippers wouldn't turn on yesterday.... This morning they worked. Now they are dead again...wth! What should I inspect? Is this common?
First thing first. Check/replace relays.
If the issue persists, run a direct feed to the wiper motors.
If the issue persists, then it may be the motors.
If it works every time you connect and disconnect the feed, then have a look at your multifunction switch assembly. There's been a few reports on here where the multifunction switch does go bad. Change your clockspring while you're In there.
Good luck
Whippers wouldn't turn on yesterday.... This morning they worked. Now they are dead again...wth! What should I inspect? Is this common?