may be fuel lines
On the right of the air filter as you look under the bonnet.
Under the bonnet there is a black fuse box at the top on the right, just next to the bonnet hinge
the bonnet lever is under the steering wheel it should have a red handle
I have the 1999 model and its under the bonnet at the front :)
The coolant valve to the heater sits above the heater matrix on the inlet pipes. It can be accessed from under the bonnet near the bulkhead below the windscreen.
It's the bottle under the bonnet with the cap and a wire on it.
On the bottom of the steering column, on mine it's a large red handle. Under the bonnet (on mine) go to the centre of the front and feel carefully for a horizontal plastic switch, push it right and the bonnet will open The support arm is across the front above the radiator.
Under the bonnet, under the heater motor filter. It's difficult to get to and requires removing the filter unit. Mk4
If you mean the lower and upper side service ports they are under the bonnet. To be a little more precise, the refill ports are a) just to the left of the bonnet catch next to the grill, and b) below and left of a, feel around following the air con pipes towards the underside of the drivers wheel arch... it is there.
Under the bonnet. When you open the bonnet, it's on the top right side.
Under the bonnet, right hand side, under the plastic cover. See the link for a picture of under the bonnet showing the battery cover and fusebox
Washer bottle is situated under the bonnet just to the right of the bonnet release.