I have a blaupunkt travelpilot 170 (rns4) i have bought a cd changer, also blaupunkt, with the right cable to connect with the travelpilot. i've connected it, it has power, but the travelpilot shows a "lock" near cdc, in cd mode. sorry for my english. if anyone can help please mail me at [email protected]

GPS - Blaupunkt - TravelPilot DX-N GPS Receiver