Hope your install went okay.
Maybe I should have, but I didn't undo the battery when I was installing my HIDs.
Figured I was really just changing bulbs so really didn't need to do anything different.
See my walkthrough on where I put my ballasts. These weren't the slimline ones but they are out of the way which is great.
I also have a 06 3.0RB so pretty much everything should be exactly the same.
HID install walkthrough