First you have to state the model and MY.
Then, most cars have solid state (electronic) regulators on the generator that are normally not serviced but replaced as a unit.
A wiring diagram is a simplified picture of an electrical circuit. It shows the components of the circuit as simplified shapes and lines.
Ask Google for Skoda wiring diagrams and various sites give info on downloading. Haynes repair manual for Skoda Fabia quite good but do not contain all circuits for example heated seats.
the alternator voltage at the battery should be between 12.4voltsv-13.6 volts
In the engine bay, check and clean as necessary all the earth/ground connections between the engine and the body and the battery and the body.You usually dont need to change whole alternator, just regulator.Type depends on the model of your skodahttp://www.nd-skoda-volkswagen.cz/images_zbozi/1288_1.jpg
skoda
Skoda is pronounced as SKOH-dah, with the emphasis on the first syllable.
you need to remove inertia fan,it has large allen key type bolt at rear,also need to wedge it, to stop it turning
Skoda means that's your stupid SKODA means destruction by there language.
skoda cars tagline
It's a Skoda. Honest
Skoda Auto is named after Emil von Skoda, a Czech engineer
The Skoda CEO is Winfried Vahland