I tried it again this morning, just to make sure I wasn't doing something dumb, and sure enough, when I use the turn signal the fog lights go off. But - only when I use the right turn signal, not the left. So I'm thinking your idea of a short circuit makes sense.
Unfortunately I am pretty sure that any warranty it may have had would most likely be out by now. It is a 10 year old vehicle and I bought it from an individual, not a dealership. I am pretty sure the issue I am having with the front speakers making weird noises would have been covered under warranty (since I found the letter mailed to the previous owner about it behind the glove compartment when I cleaned it this weekend) but nothing was done about it then and it is well beyond the 50,000 mile mark set in the letter now. I will just have to figure out how to take apart the turn signal stem and the speakers to see if I can fix it myself. It's a chance you take when you buy used from an individual and I made out like a bandit with the first jeep I bought this way so a few issues catching up with me now I'm cool with!
Any suggestions on websites that can help with my task? Otherwise, I'm searching YouTube..
2007 Patriot Sport 4x4
2001 Grand Cherokee Limited