This wireless charger has me stumped. Can anyone help? I bought the new charger from a 2018. Installed it and got nothing. During trouble shooting I found green and purple/yellow wire cut by the console lid....repaired it and still nothing. I’m receiving over 13v on the green wire....not purple/ yellow wire. I even tried reversing purple and geeen wire on the truck and only received the lighting bolt on the radio but phone didn’t charge. When I did this the 13v dropped to 2v. I tried to hook the charger to a small 12v battery and it powered up and phone charged when power was applied to green and black wire. I read several post where this new charger worked plug and play but I wondering if pinout is different configuration on 2015 Yukon for some reason?