I am on the trail of candidates for bright LED taillights. I found a site that has a variety of both marker lights and tail/stop/turn lights in amber and red. I decided to start small so I got an 8-LED marker light, 1284R, that has a "Reflex" lens which means it is also a reflector when the light is off. I will get a system worked out then look at some of the really serious stuff, like 48 and 61 LED tail/stop/turn models or two smaller ones. I don't get concerned about a little extra weight so I will use a separate SLA battery for the rear lights. The site is led-r-us.com.