ok guys I don't have my manuals at my new house yet, so I need a little help. My jeep won't start, nothing...I have plenty of power. I did the self diagnosis and it gives me a code 12 and after looking online for a while I found out what a code 12 is Battery input to PCM disconnected during last 50 key starts. So can someone look in there manual and tell me what the troubleshooting for fixing this is??? please I wana drive her and it looks like it might rain tonight