Create your own DMX/Power cables.
I use this cable for transmitting DMX signal to light fixtures, and returning the DMX signal, as it contains 2x DMX cables inside. This saves me a DMX split, which is very convinient, as the signal goes into this cable, loops through my fixtures, and the travles back through the other cable allowing me to further daisy chain it from here.
Quality is good and road worthy - fit it with neutrik connectors and appropriate strain releifs and you are good to rock.