concord garage is one of the best in the industry they are independent and not as expensive as the dealers workshop. for details i think they are under workshop in general post here in the forum.
For anyone else in similar confusion can follow simple step. Black is having earth small wire as well embebed under the main socket, so the point that has two wires (1 thick main wire + 1 slim wire) is black and other one that has 1 thick wire is red.
Even if you go wrong, if you wont throw you off as its just 12V DC current. It will simply not start the car, so you can reverse and check. Not a big issue.
Gearbox usually dont fail so easily, if regular gear oil and gear oil filter get changed in time. What VW says gear oil is for life means life of gearbox and not car. And thats why they want you to spend money at 80-100k kms when gearbox fails. If gearbox oil changed at 30-40k kms these gearboxes runs over 250k kms easily.
give your chassis no to the dealer spare part and you can get the price or else there is a list of dealers who will also need chassis no for giving the price.
Touareg are very good offroader my friend.
They have been winning 3 years consecutive Dakar rally after all.
Just protect the under nose in front and you will fly high in any dunes. Also W12 torque is amazing around 700 -800 nm and im sure it will fly from one dune to another, but sad part is its very rare in Dubai and i havent seen single selling around. If you get it, buy it.
If you are in Dubai, you can browse Satwa market plenty of shops selling batteries, just make sure to bargain good.
If you are in Sharjah, go to BMW road and you will have 100's of shops selling batteries.
Varta is good, Trane is nice, Exide is also good.
AC delco is not bad, try to stay away and only consider in end if cant find specific amp in above three brands.