so I went to do the 140amp transport van alternator upgrade to my truck today. I pulled the alternator, I had to cut the orange and the black wires on the plug in because the plug is melted and it wont come unplugged. The transport alternator wont fit due to bracketry issues, so I put the stock one back on. reconnect the two cut wires with butt connectors. Now it's charging at 15.3 volts. What's up with that?