Hey all! New Jeep owner here. I purchased a 2012 Wrangler Unlimited. My left front turn signal is not working. When I turn on my left turn signal, it is showing on the dash, it starts out blinking normal, but after a few seconds it goes to rapid flash. The rear left turn signal works fine, as does all on the right side. I have replaced the bulb, but still nothing. Headlights work fine. Which step should I take next?