Replaced right headlight assembly now the low beam dosen't burn.
With no lamp installed there is 12.8 volts at plug, bulb has been checked with volt/ohm meter and shows to be fine. When the bulb is plugged in the voltage goes away. The left side works fine.
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The bulb itself is very small. Reach in, grab the back of the bulb and turn to the left - the bulb should come out easily. You can leave the wires attached or get the bulb out first and then unplug them.
Since both Hi-Beams failed at the same time, I doubt that the bulbs are the problem. I would check the fuses, then the H-beam-Lo-Beam switch.
Is it like blue xenon light just fixing one, there is a 25000 volt ballast underneat the head lamp assembly it is burn ,check for 12 volt at the 2 wire connector , if 12volt ok ballast is no good (very expensive buy a broke assembly for the ballast 280$ ) you have to remove the bumper to gain acces to the third screw,the light bulb is good expensive too
in low beams or high or both? that is caused by: 1: bad held lamp. old lamps can go dim. swap left and right, if dim follows bulb, bingo weak bulb or wrong type bulb. buy matching blubs (same brand and P/n) 2: bad wiring to lamp. damaged wires, or connectors to same. 4: bad combo switch. (if low beams) 5: bad fuse or holder, corrosion , to either. head lamp fuses. there are 2. left and right. 6: hackers, many hackers put in wrong lights. inspect it.
Every single time I have had a failure of low beam in a headlight without failure of high beam, it has been because the lamp bulb or halogen lamp module has reached the end of its serviceable life, not because of any wiring problems. Low beam burns out first because it is on the most. If low beam is lost simultaneously in both headlights, I would check fuse first, then the headlight switch. If low beam is lost on one side only, it is almost always going to be due to the bulb or lamp module needing to be replaced. In that case, replace them in both headlights because the other one will be going kaput in short order, as well.Also if you already replaced the fuse and bulb check the headlight dimmer control switch. Thanks for using Fixya.
I am sure that a 12 Volt bulb means it needs 12 Volts. Since you changed the bulb to the other side, why not check the voltage in the working side and see what it reads?
Sometimes the turnstalk can interfere with the lighting. Try pushing the Hazard switch several times and see if the headlights straighten out. I read that too much goes through the turnstalk and that using the Hazards can derail a contact inside the stalk.
If this does not help, you may need a headlight relay in the powerbox. One contact may be dirty or burned down for the wire it feeds. Unless you have a single wire feeding both low beams to the headlights, I would bet the left and right side come out directly through the relay.
Hi, if you have a meter to check the bulb, use it to check the wiring to the socket or wiring for power when light switch is turned on. You should have around 12 volts depending on year and type of truck or auto. If the old bulb was burned, you should have power there. When you turn on switch, the other side should work and you will know you have power and it may just be corroded. Check this and you should find the problem. Please keep me posted on this, I will be around to help you. Please rate me kindly if I have been of help to you. Sincerely, Shastalaker7
If your getting power at the headlight wire harness, then it's going to be the bulb it self, but make sure your checking the right 12 volt terminal at the plug. There should be three terminals there, there is a ground, 12 volt low beam, and a 12 volt high beam. If both the low and high 12 volts are getting power, then it's going to be the head light bulb it self that has reached the end of it's life time since the day time running lights are always on which is the high beams. Good luck and check the fuse box under the hood by the battery.
I just Replaced a Low Beam Light bulb on a 2005 Buick La Sabre.
If You use a Metric socket and Remove the Two Silver bolts Attaching the headlight Assemble onto the metal surrounding the the lamp assembly it comes out to the front. This makes it much easier to access the bulb. Twist it counerclockwise & it comes out by pulling gently on the bulb. Then by realeasing a tab that is the socket holder bulb can be removed & replaced with a New #9006 low beam halogen light bulb. Wrap a Paper towel around the bulb & do NOT touch it with your bare hand as this wiil ruin a halogen bulb,