Purchased to add a brake light to my motorcycle. I wanted something that would flash enough to get the driver's attention, a little more than my current LED modulating brake light. I decided to try them out for $20 for four bulbs. I modified the bracket and mounted 2 headlights on the bracket. (As seen in the picture.) First, the light patterns are plentiful, and there are enough of them to suit everyone's tastes. Unfortunately and I don't know if this is due to not enough power to the brake cable or if the headlights are faulty, but if I put both headlights on the same circuit and wrap the wiring around, after restarting the bike there is always one and the light reverts to the default pattern back while the other stays. I tried installing a different light source to make sure that only that light source was defective. No! Third light too. Both of my bulbs run on the same cable. I have no problem with the first light keeping the selected pattern, but the second two lights are back to their default values (pattern #1). As for the brightness. I think if the background was darkened they could be a bit lighter. However, due to the shiny silvery background, these lights appear a bit dim. Not where it's almost "invisible", but during the day - forget it! It's just not bright enough. These lights are probably better used somewhere on the car, but as an extra brake light for a rear bike I'd suggest using something more expensive like Wicked Strobes.
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