Light in wheel well 0f 777?
 

http://www.flightlevel350.com/Aircra...ideo-8155.html
Look at the Singapore Airlines 777 in this video, what use is that red light inside the wheel, no clue...

I haven't a clue - but here's a guess. A warning to ground crews that hydraulics are powered and to keep out of the wheelwells. Standing by for .......:p:p:p

asked and answered here

Thanks Spanners. Made me feel quite smart - for a change.:O