This video saved me a ton of money. Thank you. But my trunk problem was a little different. It opened about 2 times out of 10 tries with the key fob. I was getting constant TRUNK AJAR alerts every time I put the transmission in drive/reverse or stepped on the brakes. My auto door locks were also activating constantly.....about 3-4 times a second. I had to pull over on a long drive home and open/close the trunk to get the short circuit to stop. I was also seeing the dome light in the trunk dim and brighten when the trunk lid moved up and down. I heard a slight buzzing from the trunk latch whenever I opened it while the ignition was on. I unwound the trunk wire harness and saw the broken black and white wire. The wrap was keeping it together enough to cause a short circuit and not a complete trunk failure. I used a butt splice connector after stripping the wiring insulation and it solved all of the issues 100%. Two other wires had some stripped insulation so I put electrical tape over them. The stripping seems to have occurred due to the too-tight zip tie from the Ford factory. I installed a new tie with a bigger loop to take tension off of the wiring harness. If a wire short circuit or wire break happens to anyone on a long drive and the auto door locks keeping firing over and over again, there are online procedures and RU-vid videos that show how you can turn the feature off until you can repair the wire.
