So I'm getting ready to start tackling this project. I've got a '14 LT Crew Cab with DL8 mirrors. It was an early build, so I'm sure I'll need the RZY harness even though I haven't checked for the pins yet. I'm planning on going to the A1 Auto mirrors that pgamboa used in the side by side. Those are pretty nice (helps that I want the bells and whistles but not the chrome).
Does anyone who's installed the RZY have any tips, tricks, or hints? I'm more looking for advice on how to snake the harness through the firewall and under the dash and things of that nature. Landing the new wires seems fine but time consuming and tedious given the hand yoga involved.
I've found the harness on GMPartsDirect for $95. It's on Amazon for ~115 and eBay is similar. My dealership says it'll run me $125. Does anyone have any other options for sources?
PS, Phil, I'll be reaching out to you soon for the mirror work.