FWIW, I bought the Kury parts. They are plug and play on the F6B with the 3234 which leaves 1 accessory port open for extra Kury lights.

1 KU7676 Plug & Play Trailer Wiring/Relay $79.99
1 KU3234 F6B Rear Accessory Light Plug & Play Harness $26.99

Got the part numbers from FlaMike's post in the following thread:

See post #2

You will still need to add a (5+1) trailer plug. This kit has an extra accessory +12V hot.