the g8 is the first car you have seen with a hatch release button? or just the hatch release button in the glove box?

nice documentation of your work. I think i would "hook" the ends of the rods though, so if the clamps loosen at all they will still operate. although, the last set of aftermarket locks I did i welded the rods to each other.

did you use disconnects in the jambs? Another thing, you might want to add fuses to each individual lock line. Not necessary, but it would let only one lock cease to operate versus killing the whole system should a wire get pinched, shredded etc.