The N-724 will add the stereo audio signal from your iPod, iPhone, MP3 Player, etc., into the FM antenna circuit of your mobile radio. When not in use, the N-724 has a mechanical relay to connect the factory antenna directly into the radio… This means that when you are not using the N-724, your radio will get 100% of the FM signal.
Turn-on/off is via a toggle switch or any +12 Volt source. The antenna input / output is standard Motorola plug / jack
( N-724, N724, N 724 )