Have you checked the fuses?
Make sure the parking brake is completely released. If the parking brake is on the Highlights go off.
Where are the relay switches on a 1999 Buick Century for the headlights
The lights on your Buick could be out for a number of reasons. It could be blown fuses, faulty wiring, or dead bulbs. Your mechanic would be able to test this.
I have 05 with no brake lights
The 2001 Buick Century brake light switch is located beneath the dashboard, on the drivers side. The brake light switch should be labeled as such.
The dash lights will dim when the head lights come on. Check for a dimmer switch on your dash. It allows you to adjust the dash lights so they are not too bright and affect your nighttime vision. It may be set too low.
I have a chev cavlier 1995 and the running lights do no work---on the dash the green light keeps blinking----what should I do?
That's a very good question, please Can someone answer it or is it that uncommon of a thing. 96Buick regal custom 3.1 Headlights are off when you have parking brake on and turn ignition over, but after you lift parking brake the only way to turn off the lights is to turn off the ignition fully.
if you have the owners manual it tells you how to change (turn off) the auto lights on setting basically turn the light control knob
the dash and radio lights are supposed to dim when the headlights come on. Make sure you have the brightness of the dash lights turned up as much as possible.
Loose battery or alterator connections
The only thing common to all those lights (but not to the center brake light) is the hazard switch. I'd check that next. On my 96 Century the hazards override the signals and brake lights meaning that the signals and brake lights must be wired into the hazard switch somehow.