Dash lights not working dimmer switch

buy it used like this or just failed now 30 years later? called out of the blue failed?
name all lamps in the dash that fail there are many
we can not guess them all.
the dash has piles of cluster lamps. (errors) and has background lamps that are DIMMER controlled.
dashboards have many lamps even the shift lever does.

1. car starts and riuns good
2. HL work key on and off, headlamps
3. park ing lamps work
4. dome lamp work (door opens domes glow)
5. cluster error lamps work or not.
6. cluster back ground dimmers work or not.
7. AC panel dead. lamps yes.
8. the car has 2 or more fuse boxs, you do know that riight
9. all facts matter above to fast accurate diagnosis. (I give up)
10. this car had option AUTO lamps , got that?

F13 ,IP box is fuse that can blow. is park feed (HL) to dash
and via the DIMMER. and also glows Illumination on AC panel
THE AC active lamp is a whole other matter.
if the DIMMER works on high but not below that is a BAD dimmer control, for sure)

IP fuse F6 is for AutO Lamps OPTED CARS.


THIS MAKES NO SENSE
I the dimmer switch turn the interior light on still so I'm assuming it's still good
IF DIMMER FAILS FAILS ALL MODES THE FUSE IS BLOWN
IF DIMMER FAILS ONLY OFF HIGH THE DIMMER ITSELF IS BAD.
IT HAS ONLY 2 PINS ON IT.
HOT WITH PARK OR HL ON.
THIS PATH IS DASH AND CLUSTER ILLUMINATION FEED
OR BACKGROUND LAMPS, ONLY, FOR NIGHT DRIVING.

blown fuse

check fuse first... check that the dimmer isnt turned all the way down... check the power coming from the dimmer switch... and if all else fails, pull the instrument cluster and check bulbs.

All go out at once, first check fuses,then dimmer switch for dash lights, finally headlight switch. To check dimmer switch, pull connection off back, on harness with test light and headlight switch activated, 1 of the leads should have power, if so, use ohm meter on dimmer to make sure it has reading between 0 and some value, if no value, open, dimmer is bad, if there wasn't power then check headlight switch, there should be heavier gauge wire that powers switch and 1 for output to hi/lo switch, smaller gauge wires for tail lamps, dash lights, license plate lamps, parking lights. The color wires from dimmer would correspond to the same colored wires on headlamp switch, probe that connection on headlamp switch with switch engaged and see if you have power, if not replace switch, if so, check wire from switch to dimmer.Now if the lights slowly went from bright one day, to less bright some other day, to not working, then the bulbs are bad... good luck...

I wopuld suggest you replace the dimmer control switch for the dash lighting.

THE PROBLEM IS THE DASH LIGHT DIMMER CONTROL IS EITHER TURNED OFF OR THE DIMMER IS DEFECTIVE, HAVE SEEN BOTH. THE DIMMER IS NEXT TO THE HEADLIGHT SWITCH

If you already have the switch out, go ahead and replace it. the carbon brush that changes the resistance for dimming is old (1997). Test by one lead on your meter to the brush. The other lead to the large terminal on the rheostat coil. Rotate the shaft to see if resistance varies.

It could be something very simple. You may have bumped the dash board light dimmer switch. It is a small slider switch directly above the rear fog light switch which is directly above the headlight switch. This slide switch will adjust the brightness of your dash board lights or shut them off. If you didn't bump this switch, then this switch may just be bad and need replacing. If everything else works, then it is probably the switch.

there is more than one bulb that lights the dash. very rare that all burn out at the same time. Check to make sure the dash light dimmer control is not turned all the way down. check all the fuses. If those are all ok it is most likley the dimmer control has went out. The dash light dimmer control on these modles have had alot of problems. I have replaced several for the problem you are having.