2000 Disco II, the battery light on the dash just started coming on, and staying on when first starting the vehicle in cold environment (0 or -0 degrees Celsius) Stays on about 1 mintue before going out. I discovered today, that if driving for several km, the light comes back on and stays on for most of the time, then goes off for a little bit, and then back on. When the light is on, the Alt is not charging (i.e. 11.87 V). When the light goes off, the Alt is charging fine (14.+ volts)
Is this an alternator starting to go bad, or is there a relay or fuse starting to go bad? Relays usually go all at once, I think, but any ideas would be appreciated. I don't understand the on again off again behavior of the system.