Loose Neutral

I have a system that is part standard NMEA2000 and part Simrad. I used a adapter to tie the two and have no issues. Only difference is the ends. 

I've had braid brake with lead and copper. If you use a piece of heavy mono between the braid and copper/lead you will see the wear developing. Install a piece if mono big enough to be able to trim off the worn spot from time to time. With the braid you won't see the wear until it's a frayed end.