Behind your fuse block are 2 round grounding blocks.  clean all of your
grounds this may do the trick

Dan

Jim Felder wrote:

> I was driving back home at night after a 400 mile errand last thursday
> in my '90. During the day, my temp needle had run high, say one needle
> width over the LED, and the light flashed all the time after I stopped
> for gas or something. I pulled over and checked the coolant lever, it
> was fine. Figured my water pump might be failing me.
>
> However, as it got dark and I turned on my lights, a good deal of
> dashlight weirdness followed. With my lights on and the brightness
> rheostat (or whatever) wheel down low, my tach read about 1000 rpm low,
> one of the other leds came on bright (the bright lights, I think) and
> the temp needle rose a bit.
>
> Turn the adjuster to full brightness, the temp LED came on dimly, the
> oil LED would shine brightly and the bright light LED would go out.
>
> Through all this I had no dash illuminance at all, totally dark.
>
> So the next day I pop the shroud off and unplug and then replug the
> switch receptacle. Everything worked.
>
> Last night the same thing happened again, and the unplug-replug trick
> didn't work.
>
> Any ideas?
>
> Thanks,
>
> Jim
>