Sorry to revive such an old thread, but I just tackled installing the London MP37 deck in my car today without the ease that many others have mentioned here. After installing I got the same "PHONE" error that others did. I pulled the radio and cut the two yellow/gray wires on socket a, pin 2. Although the wiring diagrams I've seen on the site show a blue/white wire in this spot.

Powered it up again and the radio came to life. However...the radio reception is terrible. I used the Scosche amplified antenna adapter as instructed by others on the site. I took it for a test drive just to make sure it wasn't because it was parked in the garage and still got bad reception while cruising down the street. When I pulled the radio and held it at a certain angle, the reception was vastly improved. Unfortunately, that's not the way it mounts so it does me little good.

To top it all off, my back up camera stopped working also (I'm hoping it's just the monitor).

For now, my stock radio was put back in until I can troubleshoot a little more. Not a good weekend.