[BigAls87Z28]

Exactly what he said. I also doubt that its an alt, but the dimming of the lights could mean that you are putting an excessive load on it. I dont know what else you have done to it, but it most deffinatly is dimming for a reason. Have her watch the amp gauge when she drives. If its below midway, then its running on battery power or close to it. If its north of midway, then you should be ok on the alt, and its just the car that requires a lot of juice. You could upgrade to the police alt that puts out 140. You can get that at most auto parts stores.