-To get the lighthouse gears to turn, toss a stick of dynamite at the handle. After this is done, Torque will be able to turn handle.
-To explain why the gears will not turn, take a look at them. They have Slayer knives jammed in them. The fastest way is to throw an explosive, but you can also shoot them out.
-Go outside after you get the messages from the Coast Guard. After defeating the first group of Infernas, follow the officer/CO. He will lead you to the generator. Once you turn on the generator, go back to the lighthouse. You will be able to turn the gears. The dynamite being thrown at the gears does not work.