Finally, as a newbie, I think I can contribute to a thread, with something no one has mentioned, yet.
There is a 12 volt automotive bulb, with multiple LED and it's brighter, than a normal 1156 or 1157 bulb. About 3 months ago, I bought 2 of them at AutoZone, because I was tired of the vibration from this car and the gravel roads making me replace tail light bulbs, every 6 months.
Hope This Helps...