Incidentally, I built my own bluetooth dongle for my AVi using a torn up Jabra bluetooth headset, a small enclosure, and an LM317 voltage regulator. It's powered off of the AutoCom unit and works quite nicely.
Wow! That's impressive! I would consider myself handy with tools and knowledgable with mechanical/electrical systems, but I also know my limits. If you have any pics and/or details to this mod I'm sure many of us here would be much appreciated.
As Wild72 pointed out, we have begun to find a solution. I also spoke with Dan over at AutocomUSA who is VERY knowledgeable. Here are some of my findings and fixes:
1) It seems the Nuvi780 will only allow one BT pair at a time (Will confirm this today [saturday]). Wild72 seems to think it should.
2) I was unable to pair the Autocom Dongle with the Nuvi780 (will try again today). I have yet to find the settings window on my Nuvi, but apparently I must enter code 0000 to accept the dongle
3) In addition to the 3.5mm socket, on the left side of the Nuvi, I found the 2.5mm socket on the right side of the GPS mount attachment clip (this is the base used to mount GPS onto suction base and for car charger/antenna). The 2.5mm is ONLY used as a mic output.
4) While hardwiring the GPS to the Autocom I am able to see the GPS display phone info, receive and make calls as I wish. However, if the power cord is plugged in, a ground loop occurs creating a god-awful buzzing in the ear of the receiver (person calling you). This does not occur if the power cord is unplugged. Apparently this phenomenon is common among all GPS’ that connect to a comm system. Autocom has addressed this by adding kit 1299, which creates a common ground between the mic wire and the MP3/GPS wire.
I will be fussing with it more today and let those interested know what I find.
Sport