I recently purchased a 2006 RH 400H with stock navigation and antiquated bluetooth. Everything worked just fine until I installed an aftermarket bluetooth device to stream music from iphone and have a reliable phone connection. The install was a simple plug in - in lieu of the smaller plug located on the back of the factory CD changer. I'm pleased to say the new bluetooth works fine but I immediately killed the navigation, the rear backup monitor, and the Climate Control system. I then de-installed the new bluetooth, and reinstalled the CD changer but all of the problems persisted. I rechecked all of the plugs and connections in the work area and all seemed secure. Seeing that was not the problem I reinstalled the bluetooth and proceeded to test all of the fuses in the 4 fuse boxes and all were okay. However, in that phase of fuse testing I proceeded to kill the reception to both key remotes. Both have good batteries and blink but now will not control the locks nor the rear gate. At that point I disconnected the 12V battery for 5 minutes, but that had no effect other than I had to reset the power windows, moon roof and rear gate. I have ordered an icarsoft i905 to see if that will reveal the point of failure but would like to appeal to this community for any recommendations or observations. Thanks