Wife's roadster has the "overhead stuck on" syndrome .. No exit lighting after having headlights on either.. I swapped the BCM from my coupe to hers with no change in operation (I was informed I was lucky I didn't attempt to start the car.. VIN thing..don't know for sure about that one). Odd thing is.. "out of the blue" the exterior lighting has worked a time or two on exiting after headlights were on.

One of these days I'll tunnel into the security pump module I guess..