It seems ludicrous to only provide one wire path, so I'd call the factory and ask them what they had in mind, or how people use this product. Maybe they know of a way to do this that we haven't thought of that's obvious once you hear it.
They sell this thing. Seems they might know the right way to use it.
A good answer is easier with a clear question giving the make and model of everything. "The biggest problem in communication is the illusion that it has taken place." -- G. “Bernie” Shaw
