Well, I have never tried it, but I don't know if you can get any speaker output from the oem nav unit--I believe it is all preamp signal but wouldn't hurt to hook up a test speaker and give it a shot. However, you may need to run the signal through the oem amp to get the nav voice on an outbaord speaker. Why not just get one new unit that does dvd, nav, music, ipod, etc and sounds better? Would work better and save you a lot of hassles!!
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\'05 Slate Blue Sut w/ Magnusun, JBA headers, custom exhaust, 22\" MC2 RT5 wheels, Pioneer AVIC Z1 nav, Passport SRX, Vizualogic A1000 dual, bi xenons, fog xenons, dual optimas, and just gettin\' started!
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