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designed it to wire an RCA Victor "phonograph" turntable to the radio to greatly amplify the sound. Only one cable was used as it carried a monophonic signal, not stereo. See A/V ports.

This ensures that two audio signals aren’t being piped into the receiver at the same time. Unfortunately it also means that he won’t be able to use the CD player. We have seen other methods ...

A simple Bluetooth module designed for wiring into car audio systems. There are two wires for 12 V power from the vehicle, and the audio signal is sent out over the RCA plugs. The RCA plugs can be ...