I had a problem with mine in my 93. The circuit board was blown. If you do find a plug, the ones from the 93's are different than that of the 94's and up. Don't know what's wrong with yours but if it's just the lighting like mine you can purchase glow guages. They are white overlays with a wire running off each. They hook up to your headlight switch and glow either blue or green. The cheapest I could find a used circuit board for my cluster was $200 (Canadian) used! I got the glow guages off ebay for around $40.
