I have separate tail and directional, but the 7 pin already has them corrected for the trailer. Not sure how you transmit the separate signal through the 7 pin because standard 7 pin wiring doesn't allow for it.
Do you have the coach wiring diagram?
2005 Newmar Kountry Star 3742 - Gas
ACME Eze Tow Dolly
2008 Chevy Malibu Toad