I moved my battery to the trunk, and ran 0 cable to a Moroso battery shut off, then about 7 feet were I used a junction block, that reduced it to 4 gauge that goes to the starter, where the alternator piggyback. I am running a 140 alternator single wire. Well tonight was the first night that I used my lights and after around 40 minutes of driving I noticed my volt meter going down, I just barely made it home, what did I do wrong. After I charge the battery overnight I will check the voltage at the alternator and see where it's at. I have a new harness from M and H, that harness worked before I did the restomod. It would show 14 volts, now it only shows about 12.5 (battery potential)??????????????......................................Mark