Hello all ive had a look through loads of posts and cant find a difinitive answer to my task. I have a 2006 2.0tdi 8pa sportback. I am wanting to upgrade the standard concert stereo to the audi navigation plus unit.

I have bought the double din cage, i have the nav unit which has been coded for the bose system and steering wheel controls. I have the bottom climate control with the cage and the hazard button section with it too.

i have bought an iso lead adaptor that im yet to receive but once it comes i will start the process

Is there anything else i need, if anyone has performed this task before? anything i need to look out for or adjust? is it as simple as plug and play apart form the hassle of removing the old cage and installing the new one?
thanks in advance for any help on this