I was wondering if this has happened to anyone else. My batt. has a voltage of 12.8. At low idle 700rpms. it jumps from 12.4 to 14.1 volts. At high idle 1100rpms it at a constant 14.2 volts. The reason I even noticed was I was sitting in park an noticed my dash lights were fading in an out as well as my driving lights. I removed my generator /alt. an took it to a repair shop an it tested fine. All grounds are clean as well as cables. If anyone can shed a light on this for me I would greatly appreciate the help! Thanks