1000 watt rms?...or max??...try it out FIRST then if your lights dim and flicker go out and buy anew ALT...if not kep the old one...or use it till it dies! (got info from a friend) haha
No, you probably won't want to use it until it dies, becuase then you have a good chance that you amp will die with it. It's a good way to burn out the power supply on your amp.