ArDan5s7

Hi, can anyone tell me how to get to the ashtray lights in a 57 Super 88. I've been trying to figure it out for few days but can't get a good look even with a mirror. I would like to replace the bulbs but don't know how to get them out. I see a small screw below where the wire comes out. Does that need to be removed? Seems like a lot of work to change a bulb. Thanks, Dan