Alternator or Battery?

[songsandstars]

Since I installed my stereo (only a CD deck) and my indiglo's in my '95 LX, my stereo cuts out (and comes back on) and my lights dim whenever I push on the brakes. I'm pretty sure this is an alternator overload issue, but I just wanted to get some input form other people. I am thinking about changing out both, but want to know if it's dangerous to other components in my car to get a high output alternator and a higher amped battery? Any help is greatly appreciated. Thanks...

[Greenblurr93]

does you battery warning light ever come on when your driving? can you use one without the other no prob? could also be a bad ground....clean tose up first before you spend money on something you may not need