Thanks to the help of this thread, I installed the Continental CDD7416UB-OR unit in my 2001 Boxster. I used the
M490 harness described above. It works great so far and I really like its appearance in the cabin.
The only problem, though, is that when I lock the car using the remote, the horn honks once, indicating that something isn't right (like the glove box is ajar, trunk not latched, etc.). I did notice that the instruction guide talked about a blue/brown wire that had to be isolated. I see a wire like this in the bundle, but assumed that it would have been handled by the harness. Has any one else experienced this issue?