My fuel gauge seems to work fine . And so do my turn signals. But when I use either turn signal my fuel gauge level drops.

Antyone have any idea why This would happen? Btw I went to change my title from WA. To Ca. Today
NO Problem at all. I read some real horror stories on here about going to DMV and getting screwed. They just looked at my old title and matched up my vin and frame number and said( $65.00 Please) changed states and registered. I Run to my truck and drove away quietly.