Originally Posted by Old Bill
The first time I parked my trailer, I unhooked the electrical umbilical cord after I thought I had it where I wanted it, but then decided to move it a little more and that's when I heard the loud squealing sound coming from the wheels; I plugged the cord back in and no more squealing.
When you say umbilical cord, are you referring to the cord that plugs into your tow vehicle, for the lights, brakes, etc...................or are you talking about the cable that hooks to your emergency breakaway switch.
The breakaway switch has a pin, that if pulled out, activates the trailers electric brakes with power from the trailers battery. You don't pull the pin on the emergency breakaway switch, when unhooking from the tow vehicle. You also need to make sure that the pin doesn't accidently get pulled out during towing or hooking/unhooking..............and that there is enough slack in the cable to not pull the pin when turning either.
Your breakaway switch will look similar to this pic, with the switch fastened to the tongue/frame of your trailer..........ans the cable hooks to your tow vehicle when towing.