Phil, just an update, the stock harnesses you re-pinned and sent to me worked out perfect.
So to sum it up, Phil already had a set of harnesses the same part numbers as my stock 2017 DL3/A45 mirror harnesses were, and he was able to reconfigure the pin out's on it to make it a simple plug and play ordeal for me, thus resolving the LED and amber lights not working properly on my stock harnesses. Because of my own doing, I can swap out door harnesses in both doors in 45 minutes or less (because the 3rd time is a charm) and hope to never do it again now.
I will say Phil is a super nice and trusting guy willing to help fellow forum members out, sharing his knowledge for free because he enjoys helping others, and very fair prices on his modified harnesses if you chooses to go that route. Harnesses were completely stock looking in appearance and work great. He modified and sent them out to me within 24 hours and received them about 72 hours after that.
Much appreciate your help Phil!