the part is hidden in the cerulean gym by the inflated tubes toward the back. the man then runs after telling you and may come back if i am wrong feel free to edit.
If you are talking about the kanto generator, then go to mistys gym (Cerulaen) and a rocket will be there, then follow the story from there. Suspenseful:)
he gives you the missing machine part for the generator at the power plant :) hope i helped :D
you buy it .
First of all, what do you mean by "second generator"? If you mean the generator in the Rocket hideout in Mahogany, then there is no second generator! All you have to do is kill all of the Electrode! Lance even tells you that!
They team rocket member in Pokemon Heartgold and Soulsilver has to be there no matter what.
At the Power Plant.
top left tube
you get it after defeating team rocket in goldenrod lance gives it to you
you have to solve the problem with the generator and get it from the team rocket member who is probably Russian
You must defeat Archer of Team Rocket in the Radio Tower to get the Silver Wing.
It's in mistys gym
in the gym in cearulean city