my rx7 is having trouble startin i think its my altenator from my amp from system.... it will puch start but dosent have enough juice of its own i hooked up jumpers to battery and let charge it started good 4 times but then didnt have enough juice and is only charging my battery to 12 amps when running!! and wont start now!!

 

well a system can put a lot of stress on an alternator, but i have had a lot of systems in my cars never had alternator problems. the first thing i would do is go to the walmart automotive dept. and have them test your battery, or most parts places will do it also and its free. its a good place to start. parts places may also be able to check your charging system.