I have a Garmin Streetpilot 2730 in our S80. It has an integrated XM radio and MP3 player. It will transmit its sound on any FM frequency. This signal originates in the GPS speaker. With the S80 antenna being in the rear window defogger grid, we have to constantly change the frequency when we travel.
I want to install a FM direct connect modulator that interrupts the FM antenna. I have done a lot of research and believe the Schoshe FM MOD2 is will do what I want. To intercept the antenna, you have to use some Metra 40-VL30 adapters.
Have any of you ever tried this with any success?
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