TJsti Posted March 24, 2014 Report Share Posted March 24, 2014 I recently bought a used subaru sti with an avic F700BT already installed. I just installed have my old sub, it's all wired up correctly, but it only bumps when in FM mode, and has no signal when in CD mode. I figure it has to be software issue b/c it does work for the radio, just not with mp3 playback. Anyone else experience this or have a possible solution? Please help, thanks Tim. Quote Link to post Share on other sites
woosey Posted May 3, 2014 Report Share Posted May 3, 2014 probably remote... fm = remote on, cd= remote off... Measure the blue white wire in the radio harness.... Quote Link to post Share on other sites
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