heres the story. the car was running perfect with no problem. I park the car for 4 days and go to start it and no power what so ever. I jump it and drive it for about 30 minutes. I shut it off and it won't start up. I go get a brand new battery. everything runs fine after that. I park it again for another 4 days and i go to start it and nothing, no power. I'm thinking the alternator is not charging the battery. I've changed the battery and changed the alternator and still nothing. I've checked all fuses and all is good. If i jump it, it starts. and runs fine. but when i hit the brakes all the lights flicker (head lights,dash, ect.). I drove it again after putting in another alternator and it won't start up after I shut it off. What other things should i check?