parrot ck3100 in nav-2005 corvette

Hi all,

Sorry for yet another parrot bluetooth kit thread, but mine is somewhat car specific and I didn't find the specific topic elsewhere.  Anyhow, I killed an embarrasing amount of time chasing thru Parrot's instructions this weekend, and at this point in the battle I am stuck with the mute function not working.

My 05 vette has a HU that feeds a separate bose amp. I've got the parrot kit so that everything works except the mute, but if the amp is on, the telephone sound is terrible, even if I turn the volume of the radio all the way down. If I cut power to the amp completely, the telephone sound is awesome (it's just direct at that point from the parrot to the midrange speakers in the door).  If the amp stays on while the parrot outputs to the speakers, it sounds terrible.  So, I am hoping if I can solve the mute issue, then all will be perfect.

If anyone has any thoughts, I'd sure appreciate it.  Thanks a ton.

steve

Thanks for your suggestion.  I must admit, I'm not familiar with a computer safe test light and that would be interesting to try.

In the meantime, I've spent a lot more time on this project and I've found what I think is a solution, although it's not what I would've expected. I'll share it here for others should they go down this road.

First, my car has the nav unit but does not have OnStar.  This might be important because the mute input I think is supposed to be for the OnStar, if that option is used.  However, since I didn't choose that option, perhaps my NAV HU was not programmed to use this pin as it would with OnStar.  I say this b/c grounding that mute pin most certainly does not mute the system -- I also tried several different grounds, with no success.  When I experimented further and put 12 vdc on it, I later noticed that indeed some sound was still at the speakers (very slight).  Also, the parrot, which was connected in parallel to the output of the separate amplifer, provided very poor signal at that point, so clearly there was some interference (or low impedance?) from the amp output.

Someone else identified a different pin to me, namely, an "antenna enable" pin.  I don't know why, but it turns out if you open this connection, the amp does mute, and its outputs must go high impedance because this worked perfectly, that is, the amp output did not interfere at all with the parrot ouput.  Also, power continues to the amp and there's no thump noise upon either disconnect or re-connect.

So, in the end, I used a relay to open the antenna enable signal when the parrot bluetooth receives a call, and all works as planned.  When I receive a phone call, it mutes the car audio and plays the call over the factory mid-range speakers, and when the call terminates, the car audio returns.

This HU is by no means straightforward!  Take care.