for the jvc radio, is there an remote wire, maybe a blue wire off the back of the radio? most radios have a remote wire to power an external amplifier, but it is also used for the antenna.

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U