After finding the part, go back to the power plant and talk to the manager
He'll give you his zap cannon
no you can't because the power plant isn't abandoned in Pokemon gold remember you have to find the part for the machine you can catch it in Pokemon fire red or leaf green
it is behind the Pokemon gym in Blackthorn City. It is at the back part of the lake behind the gym
In the water gym go behind one of the tubes speak to it
Copycat's house is located in the northwestern part of Saffron City.
he's on the gold bridge. if not then check the gym
Mr. Pokemon lives on Route 30 in Pokemon Gold. His house is in the northeastern part of the Route after a few patches of grass.
in the cerulean gym next to the tubes
In pokemon gold you have to find first an itemfinder. Then go to the centre of the cerulean gym where there is a square type water is held. Surf in the water until you get the machine part. I know it would take time but believe me you will get there only.
drinking hukka pani
Sprout Tower is in the northern part of Violet City.
Find the machine part in the cerulean city gym its in the water then take it the guy at the power plant now the train will work.
surf around the glitter lighthouse in olivine. or you can get one after giving the machine part to the boss in the powerplant. but the powerplant is in the other region.