Thanks, steel.
I thought it could be something like that so I turned on the radio right after I noticed the turn signals, but everything else was working normally (XM radio, in this case). That's why I thought maybe I'd just overlooked this until this morning. I was already on the way in to work, and haven't tried again since turning off the Av. I just got the call that the stuff I ordered with the Av has come in, so I need to leave it for them to install the exhaust tomorrow. If the "click" still isn't working I'm going to mention it for them to check out while they're doing the upgrade.