Well, I spent some time on the phone with people from Humminbird yesterday and today. I had questions that I needed answers to, and they gave me what I needed for info.
First, I needed to clarify some things regarding networking y Helix with my older 798 unit. They assured me that the two will network just fine to share waypoints. Any waypoints created on the Helix will automatically be display on the screen of the 798. They will not be saved on the 798, however. Just displayed on it. If I want to save them to the 798, I will need to move the cursor to it on the screen and mark it on that unit.
It is possible to share sonar images from the Helix to the 798. To do this, though, I would need to turn off the MEGA imaging capabilities on the Helix, since the 798 doesn't have the capacity to process and display MEGA imaging data. This would make no sense for me to do, since turning the MEGA imaging capabilities off would render the Helix much less useful, and nobody in the back of the boat needs to see what is on the screen up front anyway.
I also asked them about the wiring for the Helix. First, did I need a dedicated run from the battery to the bow? Second, what gauge wire is required?
They highly recommend a dedicated run, directly from the battery, with a choke installed at the battery, to prevent interference on the screen of the Helix.
As for wire size, they recommend size 12 or 14 multi-strand wire, with a 3-4 AMP slow-blow fuse inline.
Now that I know all of this, I will be ordering the networking cables, which will basically be my last piece of Humminbird equipment needed. Then I need to pick up the 25-30 feet of wire to run from stern to bow.
Onward...