In our 'Electronics' section there are two threads. One is "Radar and Laser Detectors" and the other is "Mirror tap wiring for Blendmount". The gray wire I refer to is actually a lavender wire in good light and young eyes!! Read both threads--there are pictures I think.I have a Passport Max radar detector and I was hoping to tap into the rear view mirror power using a Mirrortip from Blendmount MT-2012. Has anyone done this successfully? I appreciate any help you can give.