You've got me confused. The alternator and generator are the same thing.

Have you got a seperate alternator and voltage regulator or is it a combined unit similar to that you'd see on a car? If they are seperate then locate the alternator which will be behind the engine cover. There will be three wires coming from it, often yellow in colour. Follow these to the voltage regulator which usually has heat fins and will be fixed to the bike frame. Seperate the plug and check for AC voltage between each of the yellow wires and earth. Since the alternator is a three-phase AC generator, start the engine and the AC voltage should rise to about 60 volts AC on each of the three phases. If you have then the alternator is working normally. At the voltage regulator you will usually see a red wire and a black wire. These are a 12 volt supply from the battery and an earth. If these are correct and the system is not charging you need to replace the voltage regulator.

The three white wires coming out of the alternator housing should have a resistance of.3-.5 Ohms and at 4K revs should be making 85-120Volts AC between any two of the three wires.

The rectifier is fitted under the hump of the bike on the left hand side. Check the resistance of the wiring down to the alternator.