I recently purchased an Infinity Basslink for my 2002 325i. I was figuring I would mount it in the trunk. However, I'm not sure what lurks beneath the area behind the spare tire well and in front of the rear seat wall. The last thing I want to do is create a problem because I screwed into the gas tank or some electronics.
My preference is to mount it vertically similar to the picture linked below. Go to the bottom of the page - Final Result. I would probably have mine facing straight forward instead of at an angle. My trunk is different, but this gives you a good idea of what I'm talking about. Basslink in trunk
Included with the installation material are four self taping screws, about 1 1/4 long. The two rear screws would go into a cover of some kind that is behind the spare tire well. I'm not sure what is under there. The front two screws would be in the tire well, so those should be fine.
So if you could tell me whether it's safe or not screw down the bracket in the left rear (away from back of car) corner of the trunk I would be most grateful.