DICE Electronics MediaBridge MB-1500 BMW - Manual (Page 15)

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4. Connect both 3-pin and 6-pin cables to the BMW Interface Harness.
ATTENTION! There are two 3-pin connectors presented in the vehicle. During installation,
make sure that the 3-pin connector from the vehicle DOES NOT have a brown wire in the
middle! The 3-pin connector of the phone pre-wiring looks identical to the 3-pin connector of
the CD changer pre-wiring. Locate and use the correct 3-pin cable with the brown wire on
the outside! Incorrect connection will result in permanent damage to the unit and will not be
covered by warranty!
3-pin and 6-pin BMW cables vehicle interface harness
Note that in the X3 there may be two 6-pin audio connectors present. Connect the harness to the one without the “CD” label.