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The best product, hands down is the Badlands Illuminator. It's a run/turn/brake controller that doesn't overheat no matter how many L.E.D.'s you run. It has a built in load equalizer and is alarm compatable and it's plug & play.
And they are the nicest people to deal with. I run their run/turn/brake controller on both bikes.
Their claim to fame (Other than they don't overheat.) is that their controller has a greater voltage difference between flash and non-flash than other controllers making the turn signals more obvious. For example, the H-D controller simulates flashing by changing voltage levels between 80% and 100%. The Badlands controller changes voltage levels between 50% and 100%. I just made those numbers up to explain what I was talking about so don't quote me.