I bought replacement bulbs for my headlight at a hardware store and the parts book they had said to use a 9004 bulb. After replacing the bulbs, I saw on my old headlamps that they were number 9007's. Sure enough, after looking online, I see they should be 9007s. Is there any problem with me using the 9004 bulbs for now? Will it do any damage? Because I can't take them back. They appear to have the same wattage specs.