Excellent we now have something to work with instead of just some typewritten information.
If it were me, I would unplug everything and start over but you already have things kinda connected so we can start there.
The DL-2 power module (PM) plugs into the wall, we will do this last.
The gray wire with the black rectangular plug, plug held in with screws is the power from the PM to the DL-2 Controller DL). There are two outlets on the PM for this and either can be used. The other end goes to the DL and that only has one input. Once these are plugged in, tighten the screws to keep them in place. This cable appears to be in place.
The FM1 has an output that connects to the DL into the Tuner Input on the top 2 rows of jacks and it appears to be connected correctly. The tuner output appears to be connected to the variable output connections. There are small adjusting screws adjacent to these connections.
You only have this one input unless you have tape, cd, phono or other input pieces, the system will be FM only. No problem adding something after we get it hooked up.
The next item to connect is the EQ-2. This unit uses a different plug and needs both an input and an output connected...both going to the DL-2 controller, on a Ext Processor Input on the top rows and a Ext Processor Output on the bottom rows. Now is the time to talk about the cables since Crown uses a different plug for outputs than it uses for inputs. The Inputs are RCA jacks so the wire at that end will have RCA plugs. The plug looks like this:
the DL Input looks like this
Ignore the far end of the black connector. These two make the Input connections.
The DL uses a standard ¼" mono phone plug for the Outputs and and these appear to be the inputs and outputs to the EQ-2, also. They look like this:
and
note this is a panel mount similar to the jack on the back of the DL and all you would see is something like this, ignore the words:
Now that you are learning the difference between the RCA jacks and plugs and the Phone jacks and plugs you can verify the ends of any wires to make sure they will work for each installation. Crown is almost alone in uses different plugs as most home audio uses just the RCA connections except microphone inputs and headphone outputs. Nothing to worry about just to know so you can use the parts you need to hook things up.
Now the EQ-2 has 4 sets of connections on the back. You want to use the Unbalanced Input as are connected in the photo. This cable will go to the External Processor 1 Output on the DL. This cable will have Phone plugs on both ends.
The output of the EQ will be the Normal one and it will go to the External Processor 1 Input on the DL. This cable will need to have RCA plugs at the DL end and Phone plugs on the EQ end. To switch the EQ into the signal you will push the Ext Processor 1 button on the front of the DL.
Now to the amps and speakers, a separate post.
Let us know how you do on what is in this post.