need some help and confirmation on engine harness

so i have a couple issues, the harness went in and fit just like it should once i finished it up BUT i have a question
1. i have no idea where the plug circled in blue goes, i have looked and looked, and im fairly certain that the red circled plug goes where the other red circle is, can someone help/confirm this?
once i get this taken care of i can go back and sand the ground spots for a good connection i just want to get everything in the right place first. thanks for the help in advance
1. i have no idea where the plug circled in blue goes, i have looked and looked, and im fairly certain that the red circled plug goes where the other red circle is, can someone help/confirm this?

once i get this taken care of i can go back and sand the ground spots for a good connection i just want to get everything in the right place first. thanks for the help in advance