I just replaced my single horn on 2019 Edge Titanium with dual horn. All i had to do was remove left from headlight assembly which had only 2 10mm bolts and one plastic plug. I did not have to unplug the light, but just laid it aside and had full access to horn. I did have to remove one horn to install dual horn and then reattached the horn. Probably took about 30-45 minutes.