Right Side Rear Light Not Blinking

We bought both lights for the passenger tail light when the blinker stopped blinking (we, for some reason, did not try out both new lights at the same time)--we'll try putting in both new lights and see where that gets us.

Thank you.

It could possibly be a malfunction somewhere in the system as far as flashing goes. But that would be a ECU problem and if that were true then you could go to a junk yard and get one for cheap. Hope this helps!