If the lamp has a cloth or fabric shat you need to have a glass globe. If it has a glass shade you do not. I light mine with a mini torch. I pump it up 20-25 time. I pre-heat the generator. After a 10-30 seconds it will actually light the mantles & then I crack the valve a little to give it gas. Once it settles down I crank the valve open and give it a few more pumps. Doing it this way I don't get big flames.
Jeremy