Problem with winshield wiper delay mode

[Muzzle of Bees]

My intermittent wiper switch seems to be non functional at the moment. I pulled the #16 relay and reseated it, but no luck. I read where some of the switches may not be wired so the nob does not have power. Anyhow, I was going to verify that the switch has power by removing the left switch panel to verify it is wired before I purchase a new relay. Doe the knob come off first or does the panel pull over top of the switch? I was pulling on the knob, but it is really tough to pull.

Thanks