You will need to remove the spare tire and the Air suspension dome to get to the battery tray. A few more screws and you will see the battery and some other electronics, including sirius, between you and the battery.

That said, I did not have to use the Sirius cable provided to me...I just unplugged the CD changer and plugged those cables into the Dice cable and ran it to the front of the car. i think the extra SIRIUS cable is only for people who do not have a CD changer as well. The OEM cable is long enough that you can get to it without removing the spare, so if you ever needed to plug the CD changer back in, you could do so by just pulling the panel on the left of the car...At least that is how I understand it...

[eas] Official DICE iPod integration kit Q/A thread See post 132....

Tom

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2005 4.8is
TiAG/Black
Nav
Load Floor