JRTist

I am having an electrical issue with my courtesy lights staying on after I turn the car off and remove my key. After removing the key the lights come on (like normal), I exit the vehicle and close the door. 30 mins later the lights are still on. If I lock the car with the fob the lights will go off. I disconnected the battery and now everything works normal again.
So I'm assuming this will happen again but this time I don't want to disconnect the battery but rather disconnect specific modules to track down the problem. I'm not familiar with the Porsche electrical architecture. Can anyone point me towards a diagram of Porsche modules and locations of those modules in a 2000 911?