These LED tail light bulbs put out the light you're after, but don't get hot like normal bulbs. 1157 bulbs have staggered pins and 2 contacts on the plug. The tail light bulbs appear to be clear, but are red when illuminated.
LED bulbs are quite efficient and use such small amounts of power that a normal flasher will not work correctly. The use of LED's will almost always require the use of a special "low load" flasher like our 910-64110 (2-prong) or 910-64112 (3-prong.)