Installing Parrot Mki9100 Bluetooth Car Kit (in Vauxhall Zafira B) Pt1 - Research

After researching and comparing prices for a parrot branded hard-wired Bluetooth kit for what must have been ages (months, years - you knows?) I finally bit the bullet and bought the relevant parts to install it.

Now why did I spent so long checking prices and doing other research you ask?
1) It's rather annoying hunting for the 'wired' hands-free kit for my phone (Nokia at 1 time, then Sony Ericsson after my upgrade) not to mention messy cables that kept getting caught by the steering wheel whenever I'm driving.
2) I do have a few portable Bluetooth headpieces but I seem to keep forgetting to charge these...
3) Each parrot kit seems to be hard to install (and I didn't want to give a garage another £30-£50 to install...)
    > Not to forget needing specific parts for different cars (that weren't included in the kits and needed to be bought separately.)
3b) Again due to specific parts needed for different cars I decided to go for the parrot kits instead of say the Bury branded ones as these adaptor cables etc would be easier to locate and buy.
4) Finally I love to experiment with things (and it also gets me more familiar with the car and how it all goes together.)

Anyway a couple of research topics I found:
The manufacturer's website (and associated support pages and forums.)
http://www.parrot.com/uk/products/all-products

According to their installer page, I need the PC000043AA ISO adaptor cable
http://dbinstall.parrot.com/pdf.php?adapter=PC000043AA&ck=MKI9100&lang=UK

Alternatively I found a massively CHEAPER version called the SOT-122(x) [£8.48 vs approx £30]
where (x) is substituted for a different letter to differentiate between slightly different wiring options
If I remember right S means FULLY wired which is needed if you fit the Unika kit (allowing fully integrated controls with the buttons on the steering wheel.)
As this would add another £100 on top of what I spent I went for the cheaper option (can always 'upgrade' in future, presuming I haven't got a new car by then!

See that the SOT122 cable isn't fully connected (only about 1/2?)

Apart from the kit I also needed to buy a Stereo removal key for the stereo already installed in the car.
As Vauxhall's love using bigger sized ones than the standard called 'Double Din' I had to make sure I bought the right one [another £0.99 added to the bill]
Or I could have been a cheapskate and used a coat hanger (or 2!)

Finally the kit itself had popped onto eBay from a Portuguese Shop/Seller at an amazing price so bullet biten!
[£80+Free P&P vs £129.99 Retail Prices from major UK retailer's like Halfords]
Total £89.47 *Bargain*

Anyway one of the Best sites that helped me through the installation was:
http://www.astraownersnetwork.co.uk/showthread.php?139944-How-to-install-a-Parrot-Bluetooth-Kit-(with-Pictures)
Which I have previously used/trawled through a bit....
Note that this refers to the Vauxhall Astra - surprised I couldn't find any for installation in a Zafira!
Although some parts are very similar (bar the glove box side, and subtle parts of the dashboard.)

Other little bits I found out was that the resulting cables(on the SOT one I think) had 2 loose wires:
One labelled 'Illumination/Dash Light' > not used on Parrots so wrapped up and stored away!
And the other Switched 12v > which I put a crimp connector on (and later attached to the bottom of the cigarette socket.)  This sends the signal/power to the parrot when you start the engine, basically turning the Bluetooth Car Kit on!