recently i got a half a cap, and a new alternator for my 12" sub and 300 watt amp...at first it seemed like it elimintaed the flickering gauge and dome lights, and headlights but now it is all back and going strong whenever i crank up the music. the idle goes up and down 100 rpms sometimes with teh bass as well. just wondering if you guys have any suggestions on what else it could be or what to do? thanks a ton