wadesbrain
New member
I had the stock alt seize on me last week. I figured that I would replace it and boost the power output a bit while i was doing it. I am anticipating a light rack and figured i need more output. Anyway, I replaced the factory unit (90amp) with a bosch 120amp unit and now I am getting an overvoltage reading and a check engine light. Do I need to change something else? Regulator etc. Any help would be appreciated. thanks