How do I get my drivers rear break light to go off when my van is running? on 2004 Dodge Sprinter 2500

I can't get a inspection tag till this problem is fixed. Please help

Asked by for the 2004 Dodge Sprinter 2500
Check that it's the correct bulb AND that it's in the socket correctly. .......Do your parking lights work correctly or is one side brighter than the other?