Silverado '99 Wires at BCM

Getting ready to install two new Crimestopper RS900s, one in an '03 Trailblazer and one in a '99 Silverado. The Trailblazer should be a no-brainer as I'm using the PLDATA and GMDL1 modules, so it should handle disarm/rearm automatically (or so the literature says). Now, on the Silverado, there's a light green disarm wire on the BCM, a light blue for lock, and a white for unlock. The BCM has three plugs, purple on left, blue in middle, and brown on right. Has anyone identified these exact wires in these plugs? A pin location would be great! There are multiple light blue and white wires as well as several green wires that appear more light than dark. Your endless supply of wisdom is greatly appreciated.

The white and blue wires for lock and unlock are in the plug on the left. The positions are A3 and A4. The A row is the bottom row. The disarm wire is in the plug farthest to the right. It's in position B3. Your wire colours are correct. Happy meteringAnonymous