If you've ridden motorcycles for any length of time, you've probably had a car driver pull out or turn left in front of you, causing a near-wreck. This is by far the number one cause of bike/vehicle wrecks, many of them fatal. To make SURE they see me coming, I've installed bright amber automotive-type LED clusters to the windshield of my '04 VTX 1300C. They came with a controller that allows me to choose on/off, unison flashing, wig-wag flashing, or what I call frenzy flashing. They seem to work very well, and I use them whenever there's any likelihood of car drivers not paying enough attention to me. We're all conditioned to regard amber flashers as warning or cautionary signals, and I want to trigger that conditioning in drivers so they'll hesitate to pull out or turn left when they shouldn't.