I know this has been discused before but all I can find is good is 13.8- 14 something. Ok here is the story. My electical system is running great on my stock 2F at perfect 13.8 volts and amps look good on the gauge. The stock voltage regulater looks pretty bad with corrosion but works. I bought a voltage regualtor from CCOT (which has no return on electrical parts), installed it and 14.98 volts. Turned the lights on, and it goes slightly over 15 volts. Put the stock regulator back in and back down to 13.8 volts. I emailed CCOT yesterday and told them my story, and asked them was it adjustable. I was called at lunch time by CCOT and he told me that 15 amps is good. He kept telling me amps when he should have said volts everytime. I even corrected him a few times with no sucsuess. He told me I should not worry unless it was like 20 "Amps". He said a little high is good. The real question is: Is 15volts to high? Is CCOT up?