HarryCYUL wrote on Aug 15^th, 2013 at 11:10am:

pretty weird how their previous 757/767 had working light switches but not the 777

They do? I haven't seen that, except the dome light, which also works on 777. Also the display's same as the 777. The panel backlighting, glareshield lighting, does not work on either 757/767 that I'm aware of, and definitely not in daylight. I'm going to check this out now!!

Edit: I just checked the 767, it's the same as the 777. There's a one knob on/off panel light, and a dome light, that's it. Same as the 777. Actually the 777 glareshield light switch works, but it doesn't illuminate anything, because the glare shield illumination is on by default, and can't be turned off. When you turn it on you can see a light go on and off under the recessed part of the MCP. The knob also should have a double knob like the ND/wxr knob to the left of it. It is only a single. The second part should individually control back lighting.