Headlight low beams don't work

check for power and grounds at the headlight plug for both lights as you could have 2 burnt out lights, have had this happen a few times. you don`t say if its just the low beams. there are 3 wires one is the ground one is low beam and one is high beam. it could also be the headlight switch that is bad on the headlight circuit only. have had this happen twice. you would have to remove the switch from the dash to gain access to the plug connector to test the wires coming out of the switch, for the headlights. a third thing is it could be the dimmer switch that is bad. myself I would check the dimmer switch first then the headlight plug at the lights then the switch for the headlights.

are you touching the bulbs with your fingers? the oil from your hands can/will cause the bulb to blow. its unlikely this is your total problem but something to keep in mind wear latex gloves

HEADLIGHTS NOT WORKING

It can be faulty headlight switch or issue with its wiring. Or its faulty head light fuse.

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To troubleshoot the issue i suggest you few help links with appropriate solution. So you can follow the test and confirm what exact problem is there in your case of headlights not working:-----

Click the link below: -----

All headlights not working?

http://repairhelpcenter.blogspot.com/2012/01/all-headlights-not-working.html

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• Working of Headlight switch?
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• Both headlight bulbs blow together?

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• Car headlight bulbs don't last long?

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2007 Dodge Caliber: Low Beam Headlight Not working

http://technoanswers.blogspot.in/2012/06/2007-dodge-caliber-low-beam-headlight.html

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2003 Toyota Camry: Headlights Work Intermittently?

http://technoanswers.blogspot.in/2012/04/2003-toyota-camry-headlights-work.html

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Chevy Tahoe: Low Beam Lamps are not working?

http://technoanswers.blogspot.in/2012/04/chevy-tahoe-low-beam-lamps-are-not.html

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2001 Chevrolet Tahoe: Headlights not coming ON?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-headlights-not.html

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2004 Dodge Ram: High Beam Light is DIM?

http://technoanswers.blogspot.in/2012/04/2004-dodge-ram-high-beam-light-is-dim.html

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2001 Chevrolet Tahoe: Both Low Beam Lamps Not Working?

http://technoanswers.blogspot.in/2012/04/2001-chevrolet-tahoe-both-low-beam.html

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Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

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How to Replace a Headlight

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight.html

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How to Replace a Headlight Bulb

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-bulb.html

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How to Replace a Headlight Switch

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-headlight-switch.html

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How to Replace a Headlight Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-assembly.html

How to Replace a Park Light Assembly

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-park-light-assembly.html

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Low beam headlights Modification?

http://schematicsdiagram.blogspot.in/2012/04/low-beam-headlights-modification.html

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Headlight Assembly Removal On Honda Accord

http://technoanswers.blogspot.in/2012/06/headlight-assembly-removal-on-honda.html

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Honda Headlight Assembly Removal
http://schematicsdiagram.blogspot.in/2012/06/honda-headlight-assembly-removal.html

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How to Replace a Headlight Door

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-headlight-door.html

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How to replace HID headlight bulbs for lexus 400h?

http://schematicsdiagram.blogspot.com/2012/01/how-to-replace-hid-headlight-bulbs-for.html

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These will help.

Thanks.

I would start with checking the headlight bulbs (slim to none possibility but starting point) next go to the headlight switch.

It can be issue with headlight switch,but as its already been replaced.Try disconnecting high beam headlight wiring from headlight assembly and reconnect direct external wire from headlight switch to headlight assembly,then by switch see if headlight is getting off and turning on or not.
See below related help links,similar to your issue.Click the link below:----
Only high beams work but head lights not working on Ford F350?

http://howtobyme.blogspot.com/2011/11/only-high-beams-work-but-head-lights.html

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Only high beams working on GMC Savana?---------- High beams stopped working but headlights still work? http://howtobyme.blogspot.com/2011/11/highbeams-stopped-working-but.html
---------- • Working of Headlight switch? ----------

• Both headlight bulbs blow together? ----------

• Car headlight bulbs don't last long?
------------ Only one head light works on 2001 Dodge Caravan? http://howtobyme.blogspot.com/2011/11/only-one-head-light-works-on-2001-dodge.html

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these will help.
Thanks.

Check tour bulbs first and replace if blown. If OK then check wiring backwards from light to dip switch.

Obviously you have a connector which has come partially apart somewhere between the Headlights and the Headlight Switch. Most modern vehicles have several connectors between the Headlight Switch and the Headlights, Start at the Firewall Connector and work forward toward the Headlights making sure all connectors are securely mated. Another remote possibility is that you have fractured the "Low Beam Filaments" in BOTH Headlights. You don't mention how hard you hit the Speed Bump but if it caused the car to "Bottom Out" the front suspension it was a hard enough impact to fracture the filaments. You can use a 12 Volt Test Light at the Sockets for the Headlight Bulbs and see if you are getting 12 Volt power there. If you are in Low Beam position you have fractured the filaments. Check with High Beam too.

That sounds like a problem with the high beam switch in the low beam position. The contact is bad or the detent retainer isn't keeping the contact engaged.

Ill guarantee you have an electrical short on the left side of the headlight switch,circuit.From here its immpossible for me to go any further.Good Luck.,Get A Wiring diagram.

might just have to have the TIPM reconfigured