The tank is an almost-clear plastic tank with blue fluid in it. You can partly see it with the top mostly up and the cover open. Stand next to the rear wheel and look down in there - it's behind the tail light assembly.

The OTHER side of the car has the air pump for the locks - you'll see yellow hoses that run down to it. Pick the side of the car that does NOT have yellow hoses! (I would say "look on the drivers side" but unsure if you are left or rigth hand drive there).

The top's hydralic lines are on the left side of the car and are black, the pneumatic lines for the locks are on the right side of the car and are yellow.

The full service manual is on this site if you look around ... you can download it free!!!