blinking

Guys I bought extra bulbs 12v 23/8w Because they don't last that long. Anyways this last bulb I changed out, isn't burnt but blink fast.. I took the one from L side and put it on the R socket to see if it blinked fast but it didn't. I've tried different bulbs aswell but its like the ones I...

This happened few months back when I had purchased some bulbs from autozone, I was going for size all I know is they fit and they were 12v. When I installed them they blinked fast as if one was out. I do have aftermarket blinkers, like the ones UFO sells, the bulbs are smaller than OEM. The only...