Ok, I bought a 2005 Sentra 1.8s Special Edition, 129,000 miles. The battery & Brake light would come on.. then the car would run sluggish, then go off and run fine. Now I was driving down the freeway. about 5 hours ago. OMG! the lights came on and remained solid. the car died in the road. I had it towed home. I'm not a mechanic. I just turned 18. I'm female replaced the Alternator with a new one. 2 hours ago. And everything seemed fine. So I drove it around abit. 30 minutes. Same thing happened. The break & Battery light came on again, I'm like OMG!! Really! and everything is happening again. So I replaced the alternator for nothing..any ideas what it may be,,thank you..