85 S10 Blazer Dashboard lights out

It seems that when I turn on my headlights that all my gauges and dashboard lights go out in my 85 S10 Blazer 4x4 - also other strange things happen
like my seatbelt warning light comes on and sometimes I hear a buzzer and my right directional signal light stays on - However I do not loose my outside headlights and everything appears to be working ok - this problem sometimes fixes itself but it always comes back so I"m wondering if there is a bad ground somewhere or other easy fix?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.