From CloudModding OoT Wiki
Actor 0x00B7
ovl_Mir_Ray
Version VRom VRam Size
Debug 00F3BC70 00F3D6A0 {{{ram-start}}} {{{ram-end}}} 1A30
NTSC 1.0 00D1FCC0 00D21580 {{{ram-start}}} {{{ram-end}}} 18C0
PAL MQ 00ECFD50 00ED1600 {{{ram-start}}} {{{ram-end}}} 18B0

Notes

this actor has its positions hardcoded in the overlay, and ranges from variable 0001 to 0009
the table of positions is at 0x00F3D338 in debug rom
each entry is 0x20 bytes long, the first one corresponding to variable 0001, format:

s16: ????
s16: X position
s16: Y position
s16: Z position
s16: X position 2
s16: Y position 2
s16: Z position 2
s16: width?
s16: ????
float: ????
s16: height
last 8 bytes: lighting related (Link shines when near)

position 2 is used to cast the light vector