I did it!! ;-)
CaveDweller, your advice was right on the money. I got home from work last night, had a little time on my hands, so I decided "what the heck... I'll try the install tonight." Combining instructions from three sources, plus your pictures and input, I was able to successfully install my BlueTooth module. Just as you did, I chose not to make the committment to install the pairing button just yet -- maybe that'll be a project this weekend.
INSTALLATION:
I got a little frustrated during the installation process -- just as you did, I had a bitch of a time getting the Assist module out of that far back corner of the trunk. Instead of stretching into the trunk, I actually climbed in and contorted myself so I could get to that last screw on the upper left side. VERY hard to do, but I did it. The only other problem was figuring out how to disconnect the assist wiring. I didn't realize that little white clamp swings forward to force the pins out of the plug -- duh! After I got that taken care of it was smooth sailing from there.
Taking apart the center console was a lot less scary than I thought it would be. It's actually really easy. I didn't have any trouble lining up the holes for the antenna bracket either (somone in a post said it was tough, but I didn't find it hard at all).
OPERATION:
My phone is a Sony Ericsson T616. Once I got the center console (mostly) reassembled I paired the phone using the instructions -- worked like a charm. Once the phone was paired, I stuffed the cable and button back into the cubby hole behind where the change holder should go, then reinserted the coin holder and cup holder sections.
Voice dialing totally rocks! I've already added several frequently called numbers to the voice dialing system. I did take a call this morning during my drive to work, and it worked flawlessly. What a joy not to have to reach around looking for my phone.
OBSERVATIONS:
1.] calls work perfectly with the top down providing the wind screen is used and the windows are up -- even voice dialing worked at 85MPH. I tried it with the windows down and the voice system was confused.
2.] It seems as though the incoming caller's voice is coming from the front driver's-side speakers but not the others. This may not be the case, but it sounds that way.
3.] I've noticed it takes about two minutes to reconnect to the BMW BlueTooth ULF if I turn off the ignition, or take the phone more than 30 feet away from the car, then return. I think the manual said it should take about 30 seconds.
4.] Caller data shows up on my Navigation screen when an incoming call is received (very cool) including whether it is from the person's mobile or home number -- it's pulling this directly from the phone's internal phone book. I thought I'd be able to automatically "send" my phone's internal phone book to the BMW BlueTooth unit, and have it display on the Navigation screen -- still haven't figured out how to do that yet.
I'm a little pissed that it was so easy to install, and that it works flawlessly, yet BMW says BlueTooth is not available for 2004 convertibles. It's really silly.
Anyway, I wouldn't have tried this myself if it weren't for you, so thank you!