Back to the original problem,has anyone heard anything regarding the false triggering from the 665 Roadtech and the NIM from the MOCO or your local dealer?
I have not. Frankly, I would be surprised if they manage to get this fixed without a total release of a new product line. I'm worried that the inherent capabilities of the base Garmin GPS isn't adequate no matter how much they modify the firmware with custom code.
The approach of using just an audio frequency as a signaling method to the NIM is just a bad engineering design to start with. It really doesn't matter if they choose a different frequency, eventually the same range will be recreated by whatever you are listening to. Then there is the whole matter of whether they actually built in a way to update the NIM's code to match whatever change they made on the GPS.
We use 911 for our emergency # not because it is easy to remember, but because it is one of the few combinations that was least triggered by the random noise on the telephone lines (pulse dialing). HD needs to adopt something similar if they are going to fix this. Maybe combine some form of audio and timing -- dual frequencies and pulsed timing would be even better. If they could have done this right from the start, using a discrete digital signal would have been the way I would have went.
Disclaimer: The above may or may not be 100% accurate of the situation they face, but is how I currently view it and is just my opinion. If my opinion is wrong, never fear, for a little bit more $ and more time in the shop, my opinion can be updated to revision 10B.