Yeah, based on where the loom is located, I'm betting coil wires also. But those aren't shown clearly in the pic. The lower injectors look to have been plugged in (from the little shown in the pic), but the upper injectors are in the airbox lid which isn't shown. So they might go to those once the airbox is put back on.Kind of look like coil plugs to me, the coils are under the mat looking thing on top of the engine.
Looked like his upper injectors are plugged in so I'd guess his lower injectors are plugged in too and don't think there would be enough slack to get injector plugs way up there if everything else is plugged in correctly.