Just go to NiteHawk and get the bike light part to make your own system.

http://www.nite-hawk.com/store/custo...me.php?cat=266

I got the Nite Hawk Nomad (19.99 from NashBar). Changed out the 4 D cell batteries for a 6V 4.5amp battery from HomeDepot (16.99). And then changed out the bulb (5 watt) for a 10 watt. Then went to Nite Hawk web site and order a $29.99 Raptor Light Pod (6v 20 watt) and a $18.00 Raptor Handlebar Base. So what I ended up with is a 10/20 watt (30Watt total) two head lamp system for $84.97.