Yea I have lights, stereo, heater, ect. I like to do night wheeling and its happened before where I get out of my truck to help someone or something and I leave it running and I get back in the truck, it stalls or something and the battery is dead. From what I understand though if the alternator isn't turning at least 3000 rpm's it wont be charging. If my truck is idling around 800-1000 rpm's I feel that it wont quite be enough to get the alternator up to 3000. Im just trying to see if there are any other options out their to get a high output alternator that will charge at low rpm's.