That would sure cause an issue or two. I am happy you found it. Some of those things can be so hard to track down because wires just disappear. I was working on a boat one time and there was a couple of three way switches for the pumps. I new the issue was with the runner wire between the two, as I wired the two switches externally just for troubleshooting. There was no way I could ever follow that wire to find the issue, so it became much easier to just poke a new wire, (which was a job in itself), then to attempt to fix the old wire. I am sure someone will someday scratch their head wondering what that extra wire goes to.
2016 Wildwood 195BH
2009 Silverado 1500