I have been looking for a handsfree car kit, since my car is basically my office. I drove one car last week that didn't have a handsfree and it's a PITA.
I installed a Motorola HF-850, dedicated car kit (needs to be installed in the vehicle) and it is MAGNIFICENT! People say I sound like I'm on a land line, and can hear me even at 60 MPH with the windows down.
However, it requires a seaprate speaker. In my '89 Mazda, I don't care: I had another handsfree with a powered speaker already, so I just tapped into that. It looks nerdy, but it works very well.
Now, in my Scion, I don't want to mess things up, and am looking for one that can be tapped into the car stereo. I have an aftermarket CD/MP3 player, so the dedicated Toyota kits won't work.
Motorola also makes the T-605 with a 3.5mm input that patches through to the stereo, but for some odd reason, they didn't pass the Bluetooth into this connection! (I have one of those coming; I ordered it before I found this glitch...)
I have XM set up in all my cars, so I want to plug the XM receiver into the handsfree, and then into the car stereo, so calls come through the stereo's speakers. I could just get a new stereo, I guess.
I did find a Scosche BT-1200 that has an input, and if the output is patched into the line-in on your stereo, calls will come through that. But I'm a cheap SOB; I paid $25 for each of the Motorolas...
Anybody have a car kit that does what I want? There are others out there, but they require ISO connectors that neither my car nor stereo have....