Main headlights in my 2004 Oldsmobile Alero wont work

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Main headlights in my 2004 Oldsmobile Alero wont work

Unread post by Ash » Sat Aug 04, 2018 7:58 am

I have a 2004 oldsmobile Alero. We just replaced the headlights because they were fogged over. If you turn the lights on, the turn signal and the light right next to it work and the fog lights work but we dont have the use of the main headlights... Not sure what this means... Any ideas?


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Re: Main headlights in my 2004 Oldsmobile Alero wont work

Unread post by carriedi » Sun Aug 05, 2018 1:47 am

I don't know why your headlights would stop working just because you changed the housings. Do the daytime running lights work? Headlights are all separate from the parking and tail lights. They have a different part in the headlight switch and separate fuses and relays.

Check the headlight fuses in the underhood fuse box. Left headlight is LH HDLP (fuse 51, 15A) the right one is RH HDLP (fuse 50, 15A). They have power all the time.

there is also a relay for the headlights in the underhood fuse box. AUTO HDLP CTRL RELAY. Does the relay click when you turn the headlights on? The relay turns on the ground to the headlight circuit. If you check your wires at the headlight bulb connector the Orange wire should be battery power and dark blue is the low beam ground. the pink wire is for the high beam ground. Check the wires with the headlight unplugged. Do you have power and grounds? (when you put the low beams on and when you have the high beams on) Let me know what you find out

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