Hello.when start the engine the gen 1 lights goes out immediatly but gen 2 only goes out afther driving a few km. is there any problem ? the alternator or the battery and if so wich one is 1 and wich one nr 2

one of my v belts is also squeaking alot when when the heather blower is on. wich alternztor is responsible for that?

thanks

greetings from Belgium