I have a 94 Grand Am SE and the low beam headlights stopped working. The high beams, parking lights, fog lights all work. Is it the circuit breaker or a a switch issue?
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It sounds like you are confused about how your headlamp system is supposed to work. The DRL does not run on the High beam circuit, it runs on the low beam circuit. The fog lamps are supposed operate with the park lamps and also with the low beams, not the high beams. From your description, I would say that your system is operating as designed and you are having trouble telling High from Low. (Don't feel bad, that is why high beam indicators were invented in the first place.)
Lets start by checking the fog lamps. Turn the headlights on, switch to low beam, turn on the fog lights and see if they come on. If the foglightsdon't work, then you don't have voltage on the low beam circuit to the BCM. If you do have foglights, then the low beam circuit is providing voltage to the BCM.
By determining if the foglights work or don't work we will be able tell what side of the circuit we need to work on.
Let me know.
Regards,
You headlight lamp have a diffuser mechanism which allows it to flip between the hight beam and low beam feature of the bulb. In fact, you high beam will function even if the low beam is not working.
I would recommend the purchase of the new headlight lamp. It would cost you you any where from $15.00 per unit to get a replacement lamp
First place to start is with headlight switch. I did have a case many years ago when both high beams were blown out at once, but this is rare. When you have the headlight switch out, jump power from te low beams to the high beam contacts. If high beams come on, replace switch.
Bill
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