My lights burnt out and I thought it was the bulb but when I bought new bulbs and replaced it, the lights still didn't light up. So I was told it could be the ballast and to get a new ballast. I got a new ballast and the lights still do not come on. I tried plugging in the wires like the diagram on the ballast but still no luck. Is there something else that could be wrong? Is anyone good with electrical?