Are you sure you don't occassionally turn the head light switch one click left of center? That will turn on the right corner lights when the ignition is in the off position (two clicks will give you left corner).
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.