MPossJr

My 94 ES 300's battery light comes on and off and now it has been staying on for a few miles and has triggered the ABS light now. I have an after market stereo with an amp 2 subs but I also have a capasator. This happens even when my seytem is turned off. I replaced the alternator a few months ago. The battery will start every time. I cant figure it out. Help!!!!!!!!!!!!!!!!!!!!!!!!!! :( :(