I've got a 07 TL 3.2L, took out my subs and amp I had spliced into the back speakers with a converter. Replaced my battery cable that had my inline fuse in it. Then I go to start it and it won't start. The battery is only 3months old. I put the battery on the charger for about 30 to 40 mins. Then the vehicle will start and run for like 5 seconds. Then shuts off again and won't start. It'll just crank but won't start. Can anybody help me out.