Check the trash cans in the gym you should eventually find a switch now check the can next to the one where you found the switch this can be the one above/below you or to the left/right. Once you find the 2nd switch you can challenge the leader.
from the Pokemon fan club leader in vermilion city
The Thunder Badge
She is the 2nd gym leader ;))
The fourth gym at Pokemon fire red is grass type gym
The gym leader after Misty is Lt. Surge. He is the gym leader of Vermilion City, specializing in Electric-type Pokemon.
he is in the gym in vermillion city on fire red and/or leaf green
The third gym is in vermillion city. The Gym Leader is Sarge, and he uses electric-type Pokemon.
he is the vermillion city gym leader.
no
Vermillion city (after beating the gym leader)
The 7th leader is Blaine. He uses fire pokemon.
by battleling in their leader..........← by battleling in their leader..........←
charizard
26
None he's not in firered.
Giovanni
Viridian City.