I am looking a purchasing a Trailer. I own a 2013 RT Limited, I need to know what is the height of the hitch w/ the ball installed, and is there a plug n play for a 4-flat auto plug that is hooked up in the back area, that does not run all the way from the battery. If there is not a plug and play, can the needed power be picked up directly from the wires leading to the running, brake and stop lights. I would cut and solder these connections Any information and help will be a great help thanks in advance for your time Dave