How to install a factory charging pad to a truck that was never manufactured with one

[brittanyxo]

I have a 2017 GMC Sierra 1500 elevation, it did not come with a charging pad built in. I want to make it look as factory as possible. I don't want to use any amazon charging pads etc. After researching, the 2018 module is better than the prior years because it wasn't working for certain phones, so I see many people purchasing GM part # 13521066, which has a triple coil inside the battery pack etc. I want to hook it up to the inside core of the cigarette lighter located in the back of the center console/arm rest the one facing the back seat passengers. I've watched 40 videos and I can't seem to find the part # for the wiring harness that plugs into gm part: 13521066 that goes into the wiring unit of the cigarette lighter (internally). Can anyone help me figure this one out? Or if anyone knows another way to rig this up! Again I want it to look as factory as possible I don't want it to look like an add on...cheesy after all the money I spent on this truck I don't want it to look stupid lol. PLEASE HELP!!!!! Thank you.