Hello guys!
Well, I have read so much on this subject, and I think this may be the final solution even though I havent tried it. I have read, on more than one occassion (5 times), that the mic might be wired incorrectly.
Some say just the mic, others say it's at the bluetooth end... Either way, I think it all follows through really. So on Friday, I am going to take out my harness, chop the mic wires (at the BT end or RCD end) and swap the connectors!
If it works, I will let you know if you want to wait for confirmation.
Feel like I have spammed this forum with my bluetooth Saga, but it will help somebody one day! I don't think there are enough posts detailing the issues with changing out the bluetooth/retrofitting bluetooth on the Roc! I am now wishing I made a photo guide, but I was just caught up in ripping out the old bury unit.
My BT kit is a 7P6 revision L. I think revision M is out now! It all goes by so quickly
EDIT - Just saw another forum (Passat) that talks about the RCD510 not having a Mic out. So if you connect the harness as supplied with a Mic going in - and then going out to the BT device, there will be no output!!!
I took photos of the back of my RCD510, and I must say, it does look like I dont have pins 4 and 9, and this would support that theory! I will have a good look today.
Edit 2: Right, see the picture attached!! Sorry for the poor quality, but if you crosscheck the back of the RCD with the mygti pin assignments, you will notice that pins 4 and 9 are MISSING from the back of the RCD!! This means that no signal will enter the bluetooth unit, hence an open circuit!
I will try and get home earlish today, then connect the mic DIRECT to the bluetooth and see if I have any joy.. If none, then I will have to reverse the polarity of the Mic and see if that sorts it
EDIT 3: Having looked back at the thread, I see dstill has already been connecting his mic direct to the BT module, so this wont be your solution
. Your only choice might be to reverse Mic polarity and see if it works