Most bikes don't have a "steering wheel." However, there are a lot of choices out there for bicycle lights. One of my favorites has been lights made by a company named "light and motion." Most bike lights have several modes - high, medium, low, and flash. I have a light and motion Urban 850. It is a few years old but still works perfectly. Technology in the lighting industry is developing quickly and prices continue to come down (although you might experience sticker shock if you're a first time buyer - but believe me, it was only a few years ago that we were paying twice the price for half the light.) This is the L&M bicycle light that I would recommend for most riders today for general riding conditions:

Urban 800 Fast Charge - Light & Motion

I use the L&M on my helmet. The front light on my commuter bike is powered by a hub dynamo so that I never worry about batteries. The L&M light referenced above is an enclosed rechargeable lithium battery and has newer technology that allows "fast charging." Lots of lighting discussions in the "electronics, lighting, and gadgets" forum. Be prepared to get lots and lots of different suggestions.