LM317T Voltage Regulator with Pass Transistor

My boat was reading 12.2 V at all speeds on the battery, a good sign that something is wrong, not charging. This is a 10AMP regulated system, after looking into specifics, charging should be around 13-13.5V. For motors without regulators 14+Volts is typical. Here is a test to try on a 3 wire...



http://www.youtube.com/watch?v=Or9gSDhydA4&hl=en