Finally finished my install this morning! Getting the damn arm rest/console off was hard, broke one of the clips until I figured out how they pop out.. Of course, you don't have to do any of this, I just wanted to make it all as clean and stock looking as possible.
I ended up drilling a small hole on the bottom of the arm rest storage box (next to the 12v outlet) and mounting a panel mount jack like this:
http://legacygt.com/forums/attachment.php?attachmentid=219363&stc=1&d=1446922652
wires connect to the stereo cable coming out of the leptronix with a JST plug so it can all be disconnected. Installed the switch in the same position as the leptronix instructions.
I've got the iClever bluetooth adapter inside the arm rest box, connected to the 12v outlet and the aux-in port, my phone automatically connects to the BT adapter as soon as the car is turned on For bonus points, I bought a 2nd adapter and plugged it to my home theatre so it works exactly the same at home and in the car
Very happy with this, the sound is great, the automatic setting in the leptronix works very well, no silly blank CD to worry about.. Sweet! I still wish I had the JDM double din setup, but for the price.. This is awesome.