Atomic22, I also say don't waste your money on one like that... I have few of them in that style and never liked any of them enough to use them. Even ones of the same style with more led's than that one.
So on that note, would the 1156 -A19 narrow beam (amber) be sufficient in a forward/rear facing turn signal w/ an amber lens? The next size up w/ 30 LEDs is 1.38" wide and is a tight fit