Technically it's a simple process... easiest way is to start with a pair of small (say 4.5") headlights off some other bike (so you'd have low & high beams, unlike a car type spotlight)... say a pair of used Yamaha Virago lights you could pick up cheap from a bike wrecker. Then simply wire the second one in parallel with the first. The hardest parts would be fashioning a bracket that would take both lights (though in our case it's made easier due to the stock lightbar mounting holes) and physically fitting all the wiring inside the standard headlight bucket to one or both of the new smaller ones.
