So after many attempts to figure out why my brake light is so dull, i completely removed the tail light from the bike as to not blame it on wiring. With a hot lead to yellow, it lights. With a hot lead to blue, it lights brighter than just yellow. With a hot lead added to yellow after blue already hot, total light not brighter. Bulb properly in socket. Both socket leads proclduce 12+v individually. This indicates to me I either have a bad bulb, or what? I always assumed the brake fillament was brighter than driving light and or the combination of the two increased visual brightness, this is not my case. Siggestions other than a new bulb? Im going to LED but got the wrong one so I was testing this way first and got the unfortunate results. Thanks.