This is the cord passed through a chain collr on the dog. Pass it through the collar, a D on the collar, whatever works for you.
This washer set up allows you to manually lift the post so you can load the loop into place.
The buttons in the cab. Left for left release, right for right release. The switch only stays on (and the quick release open...) for as long as you have your finger on the button. If you use toggle switches that so on, you'll burn out the solenoid or the wire or your truck.
