How do these electrical connectors come apart? on 2002 Toyota Avalon

My starter started clicking and the engine would not turn over. I suspect the starter or solenoid. When trying to get the starter out, I just cannot figure out how to get the ignition wire out of its connector. I looked for something to push or pull or something but cannot see anything. Where is the handle for this thing?

Asked by for the 2002 Toyota Avalon
Is it the small wire on the solenoid ? if so you should be able to take the nut off at the solenoid