My 2015 XLT was involved in a front-end collision which resulted in the headlights being replaced with an aftermarket pair. I've now noticed some quirks. When the headlights are off and I hit the right turn signal, both blinkers flash in the front. The rear function as normal. When the headlights are on and I hit the right turn signal, neither blinker flashers in the front. Again, the rears function as normal. The left turn signal functions as normal. Thoughts?