Like you (and in my three series BMW), we mounted the antenna in the car. This time we put it in the passenger side corner of the windshield instead of the rear parcel shelf. It works great and I doubt we'll ever move it. We saw a new ES330 in the showroom with a LARGE, black boxy XM antenna on the middle right edge of the trunk deck. It looked like a few steps backward, to us.How do you add an AUX in? Everyone we've talked to says it isn't possible on a 2002 ES300.
-rkahn