For your 2004 Holiday Rambler Endeavor, I recommend you use a 7-way instead of a 6-way and get a connector like the 7-Pole and 4-Pole Trailer Connector Sockets w/ Mounting Bracket and Wiring - Vehicle End # HM40975-11998. This kit will give you the trailer connector, the mount, the butt connectors and the ring terminal for installation.
The wiring of this trailer connection is as follows and I recommend using a circuit tester like # PTW2993 to ensure you match function to function on... view full answer...