Originally Posted by
jester
Mike,
If you have the 5 pin or 7 pin setup on both the trailer and rig then you will not need to install the key to backup. When you go into reverse the breaks will release. That is one of the points to the 5 pins. It also provides backup lights on the trailer.
Also i think the pin you are talking about is not for the trailer revers lockout but is for the hitch safety pin. It allows the hitch not to release when you have it on your ball. This is a round pin that goes in right behind the ball after you lock it on the trailer. If this pin is in it will not allow you to lock the trailer on the ball.
I have never put in the lockout pin and never had an issue backing up the trailer. Granted i have never tryed to backup the trailer without my 5 pin connection plugged in. But i do know my trailer breaks work since i can feel them release after comming to a stop on a hill.