I have a 2002 Yamaha 15 hp outboard seems to be over charging at 14.9 to 15, replaced rectifier regulator didn't change anything still charges the same. Here is what else I have tried for some tests, disconected all accesories off the battery still charges high, hooked up another battery and charges the same way. Cleaned all connections. The batteries seem to be good because when I run my main motor the voltage is good and at anywhere from 13.2 to 14.2. Here is what I'm generally running off of the battery two graph gps combos, stereo, temp sensor, marine radio. If I turn on my heavy duty halogen lights the voltage will drop to 12.2 to 13.2. Is there any concern here or is this just how these outboards charge. Thanks Matt