The kit is fine except for the fact that the short lead is too short. It won't reach the outside of the wiring compartment to connect to the graph. I had to buy another longer one to complete the hookup. The other lead should be four feet and not two feet long. That is on Lowrance. I don't know what they were thinking.
This KIT has enough pieces to connect one unit to the NMEA 2000 system. Think about it...you don't need the NMEA 2000 unless you are going to connect more than one item. This kit should come with 2 drop cables and 3 T's to allow connection of 2 units whether it be 2 fish finders or other units. I ordered an extra drop on the first order only to find out I needed another T.