battery light turns on

hi, on my 96 talon esi, sometimes the battery light turns on when i have the car lights, the stereo, and the heater on, and as soon as the car starts moving, it goes off, and when im in full stop, it turns back on.
---is it the battery, spark plugs, the spark plug wires, or somethingthing else that is causing this?

Not certain but it sounds like to me your alternator is shitting the bed, i would bring it some where to have a load test done on it or if you have one at your house its easy and simple to do. Your ALT might be running low voltage when idle and goes up when moving, the load test will tell you if it has enough volts.

GOOD LUCK ERIC

i got a new alternator about 2 weeks ago, brand new...thanks for ur advice.