I went out to start my 2013 sets it was dead had it on trickle charger . So replaced the battery (auto craft etx18L) that's what the guy said to get . Put in charge it dead no lights or computer hooked up my junojumper up to it that I got from pit bull started took it for drive got back shut it off dead the fan didn't even keep running. I don't know I hope I didn't fire something.