i installed the nim kit in my ultra and the problem I'm having is that intermittently the nim will switch to mono phone input of the hk radio while playing xm threw the aux input and then switch back to stereo threw the aux input. i have double cked all the wiring is this a bug in the system or is there a software update from hd that will correct the problem. thanks for any help
Sandy G
This is a known bug, and currently there is no work around or software updates that I know of to fix it. It is problematic as they used an audio frequency to signal the NIM to interrupt the HK radio, which is generated by the Zumo, that occurs in many different songs as well. The only real way to avoid this problem is to use a discreate signal from the Zumo to the NIM, but I don't think that the hardware has provisions to do this, and they just managed to alter the Zumo enough to pull this accessory off.
You can minimize the amount of audio ugliness by matching your volumes, and on the highway, it really is hard to tell the difference between stereo and mono at times.
However, I feel your pain. It bugs me to no end. You will find that if you have MP3s on the Zumo and play them, any song that triggers the interruption, will do so every time at the exact same place.
Tip: Make sure to turn off XM when you switch to another audio source. Even when your not listening to XM, it is still broadcasting to the NIM and it will eventually interrupt and bleed mono XM over your other audio source.
Last update I got from the Moco on this bug was that it is a known bug, shut off XM, and wait for it... not all accessories are guaranteed to work together. I guess expecting the NIM, Zumo, and the HK radio to work together was too much.