So, I can't figure out what in the world is going on, but everytime i romp on it from a standstill or get above 75 my gauge drops and eveything but the stereo dims. It only does it at night, for some reason. I've watched it during the day. I've checked all my grounds and hot wires. I've even checked the headlight wiring to see if there's a short or anything. so far I've come up with nothing. I've tried turning my sound system off, and I've watched it during the day. It only does it at night, system or no system. It's starting to piss me off.