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koruptor -
I know its been a few years but I am installing a GROM in my 04 Z4 with DSP, no Nav
I am able to connect the 3 pin wiring harness and get everything but actual sound. The track I am playing is on the radio but no sound. I do not have the 6 pin connection wired because I cant find one and my best guess is that I need the DSP adapter. You said you didnt need it. Did you wire anything to the 6 pin plug from the GROM?
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