A marker light which I used to replace the stock reflector on each side of the fork. $3.99 to $4.99 at Wal-Mart, AutoZone, Advance Auto Parts, and others. Available in red and amber. It only takes a little drilling in the back plate which holds the reflector, and of course a wire to supply electric power. Current draw is minimal, but the light is quite bright. Greetings from The Doctor