Ever since i got my system installed, my headlights, guage cluster, and monitor all dim in and out every time the sub hits. Is this killing my battery? Would a Yellow Top fix this problem? Thanks for the help.

 

Battery can contribute to improvement and a capacitor can as well. Better grounding has been known to cure these issues as well (the equivalent of the grounding kits people are now selling for cars - re grounding battery/engine/alternator with thicker cables), but the sure fire fix is grounding in tandem with a new/upgraded alternator. It's expensive, but it works.

 

how much would an upgraded alternator be?

 

shop around man ... you can probably get a reman'd for $300 all the way up to chrome plated ones for $1200