2017 Ram 1500 non Alpine wiring question

[pghram1500]

All, I have a 2017 RAM 1500 Rebel and I am adding a sub. I am going to tap into my drivers side B-Pillar for my LOC. I have been looking for the rear door speaker colors to tap into. Reading approx 10 sites 5 have the gray wire with light green as - half have the gray with dark green as -. I am lost. does anyone have the real diagram or is there an easy way to test without removing the door pane and speaker to test.

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