No dash lights work park and netural symbols light up dome light works gas light works,tach,gas hand but no dash lights

That's your fuses check the accessory fuses they're also labeled parking accessory is the fuse you need to change on that one and make sure you don't put a higher fuse than what it requires

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.

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Dumb question...have you checked the fuses? Sounds like either that or some wires may have gotten loose.

First, why not taking it back, you paid for nothing, this is not right, they should give your money back.
Check the fuse again, to see what is happening. Do you have lights at the front?

Really sounds like the park light fuse,Maybe killed the dome light also?

Sounds like you have some confusion going on here.
The dash lights and tail lights have always been on different circuits and fuses. So if one set of lights fail, the other stays on unless the headlight switch blows up.
The fuse marked "instruments" is for the speedo and gas gauge, not the lights.
On your car there is an instrument panel module and a dash integraded module which both involve the dash lights.
You may need a shop manual to get the wiring diagrams and test procedures for this circuit.
Another thing - after 1998 most cars and trucks switched from having the headlight switch provide power to having them provide the ground connection.

1. do the park lamps work?
2. dash lamp fuse burnt?
3. is the instrument cluster analog or digital?
4. digital clusters have been known to fail however the cluster lighting is controlled by a body computer.
5. proper diagnosis with require a scan tool that will access the body module ( computer)

Under the driver's side dash. Should be a 4X8 inch black box, with fuses and relays in it.

Try disconnecting battery for couple minutes and see if it starts working again I have done that in the past