allen652:
I am using non-certified NMEA2000 cabling products that I had manufactured for my current project. I have several available for sale below if interested. See images.
2 meter cable (Male to Female) - $7.5 each
T adapter - $7 each
Male rear panel mount connector - $5 each
I have found that NEMA2000 is hardware wise follows the older DEVICENET so many parts interchange with out issues.