Most of you have probably already seen these but thought it was a pretty neat way of connecting my truck to my trailer and it actually worked. got it at Walmart.
I had those but the screw stripped out that holds the rod to the magnet. Now I use this RearViewSafety RVS-83112 Wireless Hitch Camera. The monitor plugs into the cig lighter outlet and the camera magnetically attaches to the license plate or tail gate. No more getting in and out of the truck 3 times to hitch up.