How to Hook Up a Car Stereo
Then, attach the power, remote on, and signal cables as described by the amplifier manual. In cases where a vehicle has a third power wire, it is used for a dimmer function that's tied to the headlights and the dash light dimmer switch. If you switch the car's audio source to iPhone, no sound comes through the speakers, but you will get sound over the Bluetooth connection.
Companies such as and make components that plug into an existing car stereo, enabling an iPod or iPhone cabled connection, and sometimes Bluetooth. Alternatively, if you are handy with tools, head units are not that difficult to install on your own. Users will still have full use of their car stereo.
How can I hook up an MP3 Player or Phone to my car or truck audio system? - Trigger cables are single wires that run from a video monitor to the reverse light of a car. The and are a couple of great inexpensive options.