This is a comes and goes problem. Everything else in the lighting and ignition work fine all the time. The hazard button, the ignition switch and radio all work on demand. Then the wipers will stop and switching to all positions : delay, on and off, Mist gives nothing. Then it will mysteriously come back on for a few days or weeks and then start this cycle over. Does this rule out the fuse ? Anything else I should check ? What should I check on the w/s wiper motor ?

 

It would seem to be a w/s wiper motor issue or a connector to the motor issue to be an intermittent problem. If it was a bad fuse, it would be a GO/ No GO situation.