does the plug have power?
If not gotta go further up line and find where it does or jump power from battery to switch plug with longer piece of wire. careful with all that, you could hurt something if you leave it on a long time, I'd just stick the wire into the switch plug and touch the other end to the battery, of course this is at your own risk, just telling what I would do to my car.
If it doesn't get the clutch in try the other socket on the plug and see if that gets the clutch in. If that doesn't clutch electro magnet might be bad.