I was originally looking at converting my (2018 LT) DL8 mirrors to tow mirrors, but the harnesses, plus around $700 in mirrors and switching had me hesitant to pull the trigger. Luckily, I found a guy locally who had a set of 2015 Denali DL3 mirrors available for $100. (He had previously upgraded to OEM tow mirrors).. I committed to buy and he told me he also found the Denali DL3 door harnesses and he was going to throw them in “since he didn’t need them”.. Long story short, now, I’m going from DL8->DL3 and will have factory door harnesses. Phil, I would like to make sure the DL3s will function as intended (my truck doesn’t have memory option, but it does have dimming rear view mirror). I have the correct mirror adjust switch coming for the push button fold. What do I need from you in order to make sure the door harnesses receive proper signal from the BCM? Are you interested in my “old” LT harnesses that I’ll have left over after I swap out for the Denali door harnesses..?