NeilDaMassTyson

The seller has a video for installation and I called to talk with him before purchasing to ensure that these mirrors would work on my truck and that I had the correct wiring harness to ensure that everything worked. He also provided a video for the installation of these same mirrors and when it was done he showed the door opening and the vanity lights on the side coming on. I guess I had just assumed that this was how the lights worked but I have been wrong before. i found a video of a guy splicing in some wires under the steering wheel provided below. Per the creator of this video it worked.

Hello, I recently bought a pair of tow mirrors and a wiring harness for the 2016 Silverado LT. I got them both installed and can get all the lights to work except the vanity light on the side of the mirror which is supposed to turn on when the door opens, when the cargo light is turned on when the vehicle is in reverse. The wiring harness had me insert 3 pins into the connector which plugs into the door jamb. I looked at previous postings on the forums to ensure that I inserted the pins into the correct slots i.e. (blue into #11, Red into #41 and White into #9) and this agreed with the instructions I received for the install. All the lights on the mirrors work except for the reverse/cargo lights. Does anyone have any idea where I went wrong or what I could do to fix it? Would inserting a pin upside down cause the lights to work incorrectly? The instructions stated that they must be inserted a certain way. Any help would be great, thanks!