As I make changes to my car, one of the main concerns is to keep a pretty stealthy appearance. I'm all about keeping the interior stock looking, without too much flash and without too many "gadgets" littering the cabin. After participating in the LI group buy a few months ago, I was looking at where people were mounting the on/off switch. I wasn't too impressed with many of the options, as the locations mandated conspicuous movement to turn them off. As I thought about this little project, those are a couple of the criteria I wanted to adhere to. I'd been accumulating parts over the last few months, waiting to install them as I only wanted to disassemble the interior once. I ran the wires along the passenger's side of the car and didn't have to pull out the front seat. My upgrades included:
-LCI Idrive controller and console
-modmynav w/backup camera
-V1 w/remote display
-MusicarNW sub box install w/Technic harness and Audio Control LC2i
I installed the LI (with instructions also found on e90post (http://www.e90post.com/forums/showthread.php?t=157728
thanks, Calvino). The LI can also function as a (rudimentary) PDC, so in case you get into a squeeze and have to show that what you're using is actually a PDC, you can flip a switch and it will go into that mode, and when you flip the switch back you can go back to the normal LI function w/out having to go through the Windows-based application. The LI manual shows you how to rig it up. I wanted to make sure this function was available as well. I went to Fry's and picked up some RS-232 tin shells, and soldered in the wires as per the LI manual. I finished them off w/some heatshrink, then covered the wired area w/hot glue to provide a little more stability @ the base of the connection.
I put some quick release connections on the end and wired those to the switch.
To run the wiring from the front of the car to the interior, I used the info from the E90post. I pushed through a lead wire, then used electrical tape to attach the RJ-11 connectors and pulled them through.
The modules are mounted vertically in the kidney grilles. I used double sided tape on both sides of each laser module. Doing so required wedging one of the trim removal tools in between the kidney grille slats to create some space so the tape would remain flat for final insertion.
I put the head unit near the steering wheel, making the unit easily accessible to a serial to USB cable so that I can install updates.
I picked up a very lightly used V1 w/the hard wire kit on Craigslist for $285, and wanted it installed in the headrest. I saw there were a few vendors offering it, but I thought that there has to be a DIY somewhere. A little searching, and I found the instructions on how to mount it in the headrest on m3forum.net (http://www.m3forum.net/m3forum/showthread.php?t=290578
thanks to mrtm2008). I didn't want to disassemble it, so I figured out how to squeeze it in the headrest as is. Pain in the butt, but I was rather pleased.
I have a ID10V3 D2 from a previous install, so I was already ahead on the install for the sub. I wanted to install the amp in the trunk hatch area, and didn't have something that would fit and allow the hatch to close. My concern then became locating an amp that was not so tall as to prohibit it from sitting in the hatch and letting the hatch close. Which means I had to find an amp less than 1.75" tall. This pretty much mandated a Class D amp, one that was 1 channel, 2-ohm stable and ~400 watts to go along with the sub. I did a *BUNCH* of searching over a couple weeks and *finally* found what I was looking for: Soundstream's Picasso Nano line of amps. The PN1.450D is 450W RMS @ 2-ohms, has a remote gain control, and most importantly, is only 1.5" tall.
The wireless BT headset was attached to the bottom of the V1 remote unit using hot glue. I drilled out the back of the sunglasses holder and ran a 6 ft microusb and a 3.5mm audio cable under the console and connected them inside the armrest. I used the 12v charger instead of the USB connection so as to not take that port.
I extended the speaker connections on the LC2i so that I could mount it in the hatch w/the amp.
Finally, I pulled the cigarette lighter from the ashtray and relocated it to the passenger's side footwell.
Update: The audio for the LI is turned up all the way, and over the radio and open sunroof, it can't be heard. The unit does have leads for an external speaker install. I'll be looking to resolve that issue shortly.