micra k12 door open indicators?

Hi everyone

my problem is the red door indicator (on the dashboard) popping on and off whilst driving along , i have disconnected three of the door switches to illiminate a fault there and tested the remaining switch, but it still does this , this would be ok but it also brings the interior light on at the same time, like a disco car at night, my assumption is a wire into the bcm is loose , does anybody have an idea or has experienced this before
thanks
John