Hello, I have a Cresendo BC2000d and my headlight dim bad when it really hits. I'm wondering what else I need to run it properly. I have upgraded the big 3 with 1/0 wire and have the amp hooked up to 1/0 wire. I have stock battery and stock 130 amp alternator. The amp runs at 14.8 volts idle but when it hits hard notes I know the voltage drops because my lights dim BAD. What should I do to fix this? Just upgrade to a better battery? Add another battery? Upgrade alternator? Thanks