On my 2018, the inside console USB port connects to the rear of console dual USB port. The rear dual has a usb cable going in , then a usb cable going out to inside the console. Not sure if your 2019 has the rear dual usb but if you do, pop it out and check the connections.

 

I do have the dual usb ports, however those are just power and does not connect to carplay. I am wondering if there is an additional output for carplay on the stock head unit or if I could come off the front console usb to add one in the armrest console. I just don't know what wiring harness I will need to do this.

 

The 2018 Usb goes the radio and to the Hmi. You need to check those for an used port.

If you get a rear console dual port from 17 or 18, you can replace the front one with it and move the front to console. You can use a generic mini usb cable to link the two, it won’t lock but works fine. You will also need the 6 pin connector and run power.

CarPlay compatible USB ports are different from older ones.