Ok, woman needs help! Finding myself on my own for the first time in a while, I am fitting a Hoppy Adapter trailer plug to my Dodge Durango, but it says to connect the white ground wire to the car. What is the correct way to do that? The white wire has the little connector loop, but how do I fix it to the car? Would like to learn to do this right the first time, and I know you guys are the ones to ask, Thanks Carol K.