Mine had tape over the holes too. It was because cars with fender mounted turn signals didn't have these active too. Maybe the Chrysler bean counters thought they could save a nickel by leaving them off. I removed the tape on mine and inserted bulbs/holders and they work fine with the fender units too.Intersting, as I shined a light from the back I had decided that one did not do anything interesting. What is also interesting is why would mine have what appears to be factory tape over the turn signal indicator holes?