My son was just gifted this bike and it had a blown LR turn signal bulb. Seemed like an easy fix, but no one had the 12v 21w bulb locally and it was a bear trying to find it online. I finally tracked one down on Amazon, it looks identical, but when I install it, it won't blink. If I swap sides with the older, working bulb, the older bulb blinks, but not the new. I called a few Suzuki dealers and basically got, "no clue", as my answer. Anyone here know what may be going on?