Sims 3:0x03B4C61D

DWORD - LITE
DWORD - Version
DWORD
BYTE - 128 Section count
BYTE - 56 Section count
SHORT

-128 byte Sections 
	DWORD Type? probably type of light: point, spot etc
	31 Floats (light parameters. not all used at once)
        F1 x position in tiles (+ moves to object's left)
        F2 y position in metres (+ moves up)
        F3 z position in tiles (+ moves in front of object)
        F4 red 0-1
        F5 green 0-1
        F6 blue 0-1
        F7-F31 varies according to Type

-56 byte Sections
	DWORD 
	13 FLOATS (light parameters. not all used at once)