I did successfully install rear view camera without M21 wire.
from rear qt panel run 4 wires to AV.
hardest part was...
Red (+6V) -> Pin #39
Yellow (Video) -> Pin #40
White (Shield) -> Pin #60
Black(chassis ground) -> Pin#58 and ground both.
real challenge was pin rear AV unit. I drilled and make bigger hole and used 4 pins from old handle(wo camera). that looks fit on rear AV.
after cut 4 wire and pins from old handle lock wire put them into rear AV connecter. then solder 4 wires from camera to them.
it fits and works great!
Thanks all post here help me to figure out.(30min to hatch rear qt harness but took 4 hours search forum, wire to AV.)