[danelo]

Were you able to remove the lightbulb? Definitely do that to keep the battery from draining. I looked at my own car and I was unable to find an external switch so I think that the trunk open switch is inside the lock mechanism. When I get more time I will open my up and see how to fix it.

 

[danelo]

The orange wire and the brown wire are the wires that give feedback to the car if the trunk is opened or closed. You can use a multimeter to check if the switch is the problem. I simply put a screw driver through the lock mechanism to close it. A used OE part is the way to go for something like this if you determine that the switch is bad.