I changed out all my turn signal and rear light to LED's made by SOCAL. There is a big difference in the brightness.It was not a large expense. Check them out on their website. The company is Socal.
My buddy has the SoCal LED's and they are BRIGHT. It looks like he has his brakes on all the time. The negative side, if it can even be called a negative side, is the difference in light intensity from a running light red to a " brakes applied " red is not as great as it is with OEM bulbs.
I swapped all my bulbs to LEDs on my shadow and I love em! Almost have the complete swap on my wife's VLX done I'll be doing the same on the Wing also. I like what I see with the Socal lights. Been watching some of cruisemans stuff too.