https://1drv.ms/u/s!Aqrv2TUdbV6xu2NR...u9sgW?e=0z9AOr
Download these, they may help. Let me know if the pictures of the install did not show, or download it again. I had to retrieve the pictures. Never thought I would need them again.
Good tip on the energy saving. I towed a 2012 Limited and it left a lot on. Ultimately I added a separate charge line big enough to do the job.
Make sure your owners manual states your specific vehicle can be towed four down. There were multiple model combinations and some could not be.
I will see if I still have my Edge install pictures. They may not match of course but might give you some insight. Good choice on the brake for sure.
The front end of my Edge was mostly removed. Easy enough but takes some time to get all the stuff off.
To add to the equation, we had the adaptive cruise and the radar box on the front had to be moved a bit. It worked fine but just noting it. We installed a Demco setup.
The tow plate took lots of time to install. Not as simple as our F150 for sure.
Make an effort to have a jump start box or a set of long jumper cables. As soon as you get too lazy to start it every few hours you will find a dead battery and worse, maybe a bad tranny.