there are a number of stores that sell them. you can search here
http://www.candlepowerforums.com or do a google search I suppose. You can probably get away with a cheap inefficient circuit for the driving them since the titan has a large battery, especialy if you want to run 3 in series.
yea I lub my quad, thats what I got the titan for! TO get that beast to where it loves to play. Good thing it is fast enough to backup the riceness as some call it. But hey, it's not neons, and with all the tickets people have been getting from rangers for not having a taillight I dare them to try n give me one!
I was thinking about doing a red one in the rear light in the cab, but it will be a while as I have too many other projects floating around right now.