i have a problem similar to this, when i crank my montero lights will dim in an out an my amp will come on an off and the a/c will become stronger an kinda go in an out to the same pattern as the lights but as it warms up it stops an will do it sparaticly while i drive like my lights will get stronger, i had to replace the alternator a few months ago a replaced the battery, also the battery cables would get corroded fairly quick, which i also replaced them...... what could tihs be?

 

pimpinpoo08 it seems like ur battery is not strong enough to handle every thing ur throwing at id go out and get an optima(yellow top) best battery to get if u got a huge system or get a alternate battery for your system and im not sure about the corrosion issue but u can get some battery lube from a auto parts place for like a buck that will prevent it