motor sound changes while using any electrical switch

[haidoura]

why my motor's sound changes its sound when i turn on the lights , as if it takes alot of power , could this be a leak in electricity , or its a normal issue
cause i dont think that the company will make the engine roars while turning on the lights.
shouldnt it be stable while lights on.
i dont mind the engine does this for the AC but for lights ?!?!? i mean comon

[DEFKON99]

same here when i hit the lights, turn on my brights, hit the tube (since i got a tv/radio in my car), bump the bass, i think its the alternator man, its a gey 80amp im soon going to upgrade to 140A.

[haidoura]

so changing the alternator to 140A, should it follow this a changes in fuses or any thing else.
cause increasiing the current flow from 80 to 140A that a whole shit of Amps

[DEFKON99]

well how much stuf are your running amp + subs ? or what cause if anything it just may be goin out.