Re: Brightness of factory backup lights in lumens
My buddy had some high-end LED back up bulbs in his Olds and he let me try them out. These were $25+ a piece and highly regarded.
Very disappointing. Although looking at them directly they were somewhat brighter than the $0.90 incandescent 1156 bulbs, they projected just a tiny bit more, maybe a 5% larger field of light. Not any significant increase in practicality and in no way worth the huge premium. My friend likes them, though, and guess that's what counts for him.
I went instead with Halogens from NAPA, part number R5012BH. HUGE improvement over the stock incandescent and far better than the LED. They're 50 watts, and at least twice as bright as the stock bulbs. The high wattage at first concerned me regarding the heat and the plastic housing lenses, but since they're for backing up only, it shouldn't be a problem. I did a 6 point exit from a tight parking spot and checked the lenses after I was done and they were cool to the touch. It was about $15 for the pair. Highly recommended.