Follow up. Couple of days ago I installed my new, right out of the box Mopar multi-switch. Put everything back together only to find that, altho the fog lights weren't coming on by themselves anymore, the turn signals and 4-way flash wouldn't work. Hooked old switch back up and turn sigs & 4-way worked fine but fogs were on again. So, I got a bad new Mopar switch (which I noted was made in Mexico). Now waiting on another new switch. Left the old bad switch in so I have turn signals and left the fog light relay unplugged, so those stay off, for now.