Adding to what John Barca has posted --
The instructions from brakeaway switch manufacturer,
Warner Electric, state on page 4:
"
Position the breakaway switch on the trailer frame with the pin pointing toward the towing vehicle.
Allow sufficient lanyard length to attach the lanyard to the towing vehicle.
The lanyard should be long enough to allow for turning corners,
yet short enough to disengage the pin from the switch before the safety chains on the hitch become taut in a trailer disconnect situation.
" (bold added for emphasis)
Ron
