I went to turn on the bright lights with the lever on the steering column and the headlights lost all power. I still have all other lights such as fog lights, signals, brakes, etc., just not the main lights. I have checked all fuses, bought a new headlight switch, and looked for any loose wiring at the steering column. I do notice that when I have the hood open and the top off the fuse box, I here a clicking noise coming from the headlamp relay as I move the lever on the column to the bright lights position.
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I don't believe there is a fuse. There is a circuit breaker built into the headlight switch. If you are sure the headlight switch is good, it could be a bad dimmer switch. If you have a voltmeter, with the headlight switch turned on, a larger yellow wire going from the headlight switch to the dimmer switch should be a hot wire. The dimmer switch sends power on a tan wire to the low beams, and through a light green wire to the high beam bulbs.
If your high beam indicator on the dash also doesn't work, then it is likely one of those switches. A voltmeter or test light would need to be used to find which one is bad. If you can find the connector at the steering column going to the dimmer switch, pull it apart and check for power on the yellow wire coming from the headlight switch, with the headlight switch turned on. If no power, the headlight switch is bad. If there is power there, then the dimmer switch must be bad.
First check around all the lights (front, rear, headlight, turn signal, parking, fog, etc..) for loose, broken, or bare wires, and/or loose , broken, or bad connectors. Any of these could cause the lighting to short. If everything is in good working order, then the problem will most likely lie with switch inside the column (the lever).
The Buick Century is equipped with a
multi-switch. This switch is an all in one switch that controls your
cruise control, windshield wipers and turn signals in one switch. This
switch also controls dimming and brightening of your headlights. The
dimmer switch is simple to replace, and all you need is a phillips head
screwdriver to complete the task.
Removing the Steering Column Shroud
Removing the dimmer switch starts at the steeringcolumn.
To plan this task out, access the steering column by removing the
screws holding the steering column shroud in place. This will expose the
turn signal lever. Remove the lever by twisting it forward, and pulling
it out of the switch.
Removing the Dimmer Switch
The switch is held on by two
screws and a wiring harness. The wiring harness can be removed by prying
up on the locking tabs and pulling the connector out of the socket. The
two screws can be removed with a phillips head screwdriver. The switch
will slide out. To install a dimmer switch, be sure to repeat these
steps in reverse order.
Your turn signal/headlight multifunction switch has failed.
To replace it, remove the four screws from the bottom of the steering column cover, split the cover apart. Unplug the one connector out of the bottom of the headlight switch, then depress the two levers, on top and bottom of the switch housing, and slide the switch out. Install in reverse order.
I believe that all of the Functions Listed above are on the Same Handle. There is a Half Moon Circuit and Switch that Goes around the Steering Shaft inside the Steering Column for this Handle. This is Malfunctioning and will need to be Replaced. Not an Easy Job. You will need to Pull the Sterring Wheel and go from their. Please Rate My Response! Thanks!
Probably the combination switch, located in steering column, controls all lights. On ours, we lost all lights EXCEPT headlights, fuses and bulbs were all good. Replaced the switch yesterday (well, our Sidekick had two switches) and now all lights work fine. You need to pull the steering wheel to get at the switches. We got parts at a junkyard, but AutoZone also sold them at less than dealer prices.