Here is a GARMIN nüvi 1450LMT mounted using the BMW kit. Normally I don't like aftermarket options but this one works well. I got power from CAS which is easier to get to than the lighter in the console. Wired in a female lighter adapter. Plugged in the nuvi traffic adapter. And coiled the excess wire/traffic antenna just under the speaker in the center of the dash.
Has anyone found the power source for the accessory position? When I put the key in the slot the radio comes on. Ideally I would like the nuvi and my bluetooth to come on then rather than having to press the Start button.