I’d do start/ignition/accessories next. Now that will branch off to a number of things, but you can isolate them. Or move on to taillights/brakes/turn signals. No matter what you choose, keep the small fuse and jumper on the main battery feed at the battery. Just in case theres a direct fault to ground. You don’t want to have to buy replacement smoke, I don’t know if they make it for Fords.