GREAT - Be very careful with that adapter cable, those male pins will have power on them if the MH lights are turned on and that cable is unplugged from the car. NOTE - Yes, If I turn the car lights on, it will back feed thru the cable and power the MH lights, so be careful (Thats why I should have installed diodes, to prevent that)
The way mine works, that adapter cable is about 5 ft long and is taped to the tow bar, one end plugs into the MH, the other plugs into the car. When we remove the tow bar, the cable stays with the tow bar.
I always unplug the cable from the MH first, then unplug the cable from the car. On the car, the four flat sticks out from the front grill.
On mine, I have the lights hard wired into the cars lights, no diodes. I used the female four flat on the front of the car so it would not be shorting out on anything when its unplugged, same reason they use it on the back of the car. :-)
I then pull the pins on the tow bar, remove the tow bar, and put it in the trunk of the car.
2001 Coachmen Mirada (Ford F53 6.8L V10) - Toad 2003 Saturn Vue.
It won't do MACH 2, but I can get a sandwich and take a pee.