<VV> no vair '92 Blazer Instrument Gauge Problem

[Padgett]

>On a '92 full size Blazer - this is the first year of the "new style" for 
>the Blazer/Suburban but the same body used since '88 on the pickups - the 
>instrument gages, except the voltage gage, all go wonky (toward either 
>full negative or full positive) if the headlight switch is turned on and 
>the light dimmer switch is turned up above "off".

To me that sounds like a bad instrument panel ground. Add the load of the 
instrument lights and it pulls the panel ground up.

Padgett