I used Jeff's mod on my X950BH and it worked just fine. Only prompt I get is the unit telling me that it detected my parking brake wired inccorectly. It's not an issue because I can still watch movies while in motion as well as input addresses into the GPS.
Now I'm not sure if iI'm reading your post correctly, epsilonkore, but you're supposed to do one of two things for the mod to work . . .
1) Take the Yellow Mute Wire and move it over to the left one spot (where Jeff has the green wire). Then ground the green parking wire and the nearly switched yellow mute wire.
OR
2) Do wha