I am in the process of installing DCC and replacing the light bulbs in my Proto 2000 engines. I have and want to use my LED lights for this. I know I need to use resisters, but I don't know if the ones I have are good enough as I bought them on eBay to be used with 9V batteries. I am assuming that resisters for 9V won't do the job as the railroad may need more. Can anyone help me out please? Thanks.