enblethen wrote:
Higher the Kelvin rating the whiter and brighter the light!
Careful! The base is the same as an 1157, however the 1157 is a dual filament lamp. Look inside the socket single pin is an 1141, dual pin is a 1076
Kelvin temp relates to the COLOR of the light spectrum NOT how bright it is. 2700 or so is in the yellow spectrum, 5K or so more like daylight and more white, then as you go up more towards blue end of the spectrum.
Brightness is measured in LUMENS. It's easy to have a 2700K bulb appear and be much brighter than a 5000K bulb.