Charging systen failure light came on, lights dimmed for a min and so did heating system..what can this be?

Diagnosing Common Automotive Charging System Problems

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Sep 18, 2013 - Dim lights. ... Problem: Engine starts OK, but the battery does not stay charged. ... Solution #2: If the battery won't hold its charge and your engine stalls out,then it's time to ... Problem: The charge indicator light comes on while driving. .... It's OK if the wiring of the toggle switch goes to B+ or the alternator B+ ...

Alternator Problems -- Diagnosing Electrical Problems ...

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Jun 24, 2013 - Diagnosing alternator problems can be a bit tricky in certain ... After that, the alternator takes over. ... Your lights might begin to dim, you'll lose power, and then, the car ... be able to turn on the headlights, or they'll come on but very dimly. ... So before you go out and order a new battery or a new alternator, ...

What causes the battery light to be on? ' Mustang Forums at StangNet

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Sounds like a charging system failure. Check battery and voltage while it is running. Should be 13 to 14.5 volts.

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check the drive belt condition and tension

Combination of brake and battery light mean the alternator is not charging. after you wait for a wile the battery recover some power and will run again but as soon the power drop below 9V the engine die. Test the charging system and replace the alternator
Good Luck

If the lights are dim when the engine is off, but brighten when it is running, it means that the battery is going bad. If they do not get brighter with the engine on, then you have a charging system failure. This may be due to a blown fuse or a slipping belt, but may also mean that you need a new alternator.

indicates battery failure or charging circuit failure
get it back to a service dealer for a warranty fix if it is only 1 month old

charge the battery then remove the negative battery cable and place a test light between the cable and the battery remove fuses until the light goes dim also unplug and unbolt the alternator as bad diodes can draw on the system it can charge and still drain the battery down

alternator most likely, but you will need to fully charge the battery in order to test if battery is good or not.

This is a common problem with these cars. I have had it come on also a couple of times. No need to worry unless it stays on.