In the 1989 Jaguar XJS, the dimmer knob for the dashboard lights is located on the left side of the dashboard, near the headlight switch. It is typically a small rotary knob that allows you to adjust the brightness of the instrument panel lights. You can turn it clockwise to increase brightness and counterclockwise to decrease it.
bad dimmer controll
The headlight switch that has the dash light dimmer knob. The dimmer switch went bad and you can only fix it by getting another headlight switch on most cars. Some though have a separate dimmer switch.
Trip meter knob. Rotate counterclockwise.
The dimmer control knob (usually the headlight knob) is turned down. Turn it to adjust the brightness
The illumination of the dash during the daytime is at full brightness, normal. When the head lamps and such are turned on the brightness of the dash illumination is overridden by the dimmer. Turn the dimmer up. Usually rotation of the headlight knob will do the trick. Now if you have an electronic dimmer then it may have failed and will require replacement. Obviously the illumination works so the issue is the night time configuration of the lighting through the dimmer.
Inside driver side dash board, behind gauge cluster dimmer light knob.
To adjust the brightness of the dash on a 2001 Audi A4 Avant, locate the dimmer switch which is typically found on the headlight switch. Turn the dimmer knob clockwise to increase brightness or counterclockwise to decrease it. Make sure your vehicle's headlights are on, as the dash brightness adjustment often only works when the lights are activated. Once adjusted to your preference, you can release the knob.
its were you right knee would be when you are sitting in the driver seat, there is a small knob on that panel below the ignition key and slightly to the left.
Only a suggestion I'm afraid. I thought that the dash lights weren't working on my '89 XJ-S until I tried the dimmer knob in every possible position. It produced a very dull glimmer for about 10% of its total range of movement somewhere between 60 and 70 % of the way round and nothing anywhere else Before you write off your dash lights try all possible positions for the knob
Check the dimmer knob. If that isn't it. Check your fuse. Might not be the problem, but it's a place to start
In a 2003 Nissan Altima, the dash light dimmer switch is typically located on the left side of the steering column. It is integrated with the headlight switch, allowing you to adjust the brightness of the dashboard lights. You can find it by looking for a small dial or knob near the steering wheel.
On many cars it was built into the headlight switch, which was a knob on the dashboard, you pull it outward to turn the headlights on, you twist it clockwise to make the dash lights brighter, counterclockwise to dim them.