Decided to give it a try. I understand what Ludicrous Speed was saying about the tail light plug in, You remove the 1157 bulbs and the LED board has a 1157 base so it just plugs into one of the two sockets. You remove the other socket to run the boards turn signal wires through.
The Smoked lens matches my bikes silver/gray nicely, but didn't care much for the lights color (kind of dull red) when the light or brake was on. Same goes for the turn signals, kind of dull yellow with the smoke lens. Tried the stock red lens over the LED's and the brake and TL is a brilliant red, very bright from behind and kinda fades as you go to the side. Still bright, just not as bright as from the rear. The turn signals also look better w/ the red lens IMO, probably not a legal amber though.
So for now I'm using the LED w/out its turn signals hooked up w/red lens. I like that it flashes from center outward like 5 times before staying steady when the brake's applied. Real attention getter!
Given the cost and outcome, I would've just replaced the 1157 bulbs with those flashy LED ones and got after market turn signal replacements.
If someone is set on the CA's, I'd suggest the clear lens. Smoked or colored impacts the lights color to much. JMO though.