Not sure about your model as my first and only is an '84 29 sovereign
but the breakaway switch should be located on the tongue (usually right by the tongue jack) and the "pull wire" should connect to the tow vehicle. You didn't mention and I don't know the model again, do you have electric brakes? If so, the breakaway should be wired from the battery through the switch to the brake magnets. Hint: you can use the exisiting brake wire in the trailer frame since the switch is normally open except in an emergency at which time the harness wire will have been pulled from the trailer and thus eliminate the chance of feedback voltage to the brake control in the tow vehicle. The switch is about $10 at any auto store and is straight forward stuff. Good luck.