Adding Lights

Now that fall is here it's too dark too early to cut my grass after work. If I had brighter lights I could do it..... does anyone know if there is a direct replacement bulb for my Craftsman that I can put in and have more light? I used to plow with it and the stock lights were plenty bright when it was dark BUT I was doing it in the dark with white snow which is very reflective, grass... not so much. I'm not really interested in adding lights, just replacing the stock bulbs with something brighter. Thanks in advance.