andy-fisher

This suggests that it's on the top of the head unit.

I had an issue where the outer high level brake light LEDs were faintly illuminated all the time. Not obvious during the day but noticed one night. After a little investigation I found that the connectors near the CD changer were wet. It wasn't the usual washer pipe problem and I assumed it may have been the water that always seems to run off the hatch and into the boot when its been raining. I dried it all up and cleaned the green fuzz off the connectors and all was good again. More care is now taken when opening the hatch to minimise how much water runs into the car by opening part way and waiting for the water to run off into the channels either side before opening all the way.