I bought a kit and changed mine. Don't remember the price from the dealer but if I remember its not too high, but well worth the price. Like the extra light in the back.
I agree with Scrounger...I just installed Badlands Illuminator on my FLHRC from RideTimeTechnology.com and it's the best. Got red lenses for the rear from Keith, also. Best thing I put on bike. Ordered LED turns and clear lenses for front.