The next wires to hook up are the servo wires, because I know where they are. I looked at my routing above the ECM and decided they should be below the ECM. So I rerouted all the wires to underneath. I hung them off the rib on stand offs.
Then I bundled the wires of each servo and put D-Sub pins on them. Then I put the two bundles into the connector. MISTAKE. I should have merged the 14 wires into just one bundle going into the connector. I'll do that in the future. This is okay for now. It just took more materials and space in the hole then if I had merged them into one bundle. Plus the casing doesn't accept two small bundles as easily as it would accept one larger bundle.
The servo bundle plugs into the ACM. This is the first major connector I've made to plug into the ACM. There are several more to do. And they will be more complicated.