So I'm in the process of purchasing a 2000 BMW 540i 6 speed. The previous owner had some type of radar detector hardwired - there is a wire coming out of the roof liner where the reading lights are. The wire is white or light grey and has a telephone jack style connector.
Wondering what's on the other end of this wire? Is it just power to plug into a detector mounted high on the windshield? Are these cables universal or do I need to buy the same detector the PO had?
I know I'm going to speed in this car, and it's pretty high profile, so I'd like to take advantage of the hard wire and set up another detector, but I've never owned one before.
I can post a picture when I take delivery if it'll help.