Has anyone tried the 3157 LED bulbs from superbrightleds.com to replace the anemic stock backup lights? I just tried a pair of the Sylvania 3057 LEDs, but one would light only very dimly. I swapped it from one side to the other, but got the same results. I've read that backfitting LEDs to electrical systems that weren't designed for them sometimes doesn't work, so I'm not sure what I"m up against.