it took me about 6 hours. I just didn't get around to doing it until this past weekend. It shouldn't have taken me that long to finish, but I found out my first relay was bad after doing most of the work. Oh well, at least it forced me to check and double check everything I did. Now I'm completely satisfied with the wiring, the connections, the grounds, and most importantly, the fact that I won't be melting anymore fuse holders and switches.