Today I found that the left turn signal in front isn't working. The running light illuminates perfectly, but when signaling nothing happens at the front (rear blinks quickly as you'd expect). I swapped bulbs in front to no effect; both bulbs are fine. I'm guessing this is not a new issue as the "broken" signal has a much cleaner, newer looking bulb. I took off all the front fairings to look at the wiring and I found some connections that were loose, but reconnecting them has also had no effect. Possibilities?