Important: The following based on Japanese (right hndled) Mazda6 or Atenza. Your Mazda6 with left handled may differ.
This is a shortcut to install the cable to HU without removing it from the car.
Put your hand from the point below and put the blue connector to HU. Prior to do this you must know the location of the HU and the location of the connector.
HU is the lower one and near to the point below you will find radio antenna at the near corner of the back panel. The connector for the Adpater is right next to the antenna.
Note, the connector is VERY firm to install, you must push hard until it is locked.The point below is narrow and may not have enough room for your big hand. In that case forget about the shortcut and remove HU from the car, it is much safer for both HU and your hand.
Put your hand to reach the back panel of HU.
Rear view of HU. Blue connector goes to the right white connector.
(Photo taken by CHACHAJIRO)Here are pictures after the installation.
Cable is Installed Test @ I own Toshiba GigabeatG20 which is thin and small with 20GB HDD
I believe iPod has no problem while I never tested it
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