masterofyard

Car wouldn't start. Replaced the battery. Now the radio will go out for a few then turn back on and headlights flicker randomly. I checked the voltage while the car is running and it is reading about 15 volts and spikes to maybe 15.5 volts randomly. Put all accessories on and same voltage reading with the meter needle spiking back and fourth. Is it possible alt, tipm or voltage regulator? There is no unusual noise coming from the alt. Any help greatly appreciated.