How can I remove the glass from the macbook display to get to the wifi antenna?

I have a 2014 MBP that is water damaged. The display and battery no longer work and I do not have the cash to repair it, so I decided to turn it into a desktop. The keyboard and trackpad work perfectly fine. But I *had* to remove the display, it will only allow me to work an external display if the lid is closed but will only power on if the lid is open.

So far I tried using 4 different external USB WiFi dongles but none of the drivers are compatible with El Capitan. I considered using a USB to Ethernet adapter but I would strongly prefer to use the stock wifi card and the original antenna