NOTE - There are TWO versions of this product with different applications, but the same part number.
The version with the AC plug at the power source end allows you to plug 3/8" Incandescent rope light into a 115V AC wall socket
The version with bare wires at the power source end allows you to connect 3/8" LED rope light to a 12 or 24V DC power source - e.g. a bus bar, etc.
Unscrew the compression end fitting and slide it over the rope light.
Insert the 2 pins on the power cord into the rope light, making sure they line up with the wires in the rope light.
Slide the compression fitting down to the power cord, and screw down tight. Done!