Hey i'm kinda new to these forums so i hope i can get alot of ideas about my audi. I have a 1988 Audi 90 quattro. I'm having issues with the dash lights. when i turn the lights on, they come on only if my rear fog lights are on. once the rear lights are turned off the cluster lights turn off aswell. i'm also having problems with my vaccume pump. it quit working a little while ago so i disconnected it from its power source and oddly as it seems the dash cluster woudnt display any lights other than the clock which is always lit and computer lights, nothing else would light. Does anyone have any ideas why this is happening and what i can do to fix it ? I've learned alot about audis because mines had so many issuesand i always enjoya helpfulhand.if anyone has any info please let me know thanks.