Hello! I have an 18 foot skeeter with one lowrance HDS Carbon 9. I just got myself another HDS Carbon 9 and I am buying an Ultrex because by Edge died. I was looking at the point one but I have a bunch of questions. I am going to connect the two lowrances with an ethernet cable. Do I need two point one's? One for each unit? Will the point one affect the internal GPS of the Ultrex? Any information would be helpful... Thank you

You only need one Point one.  If you fish structure and off shore the point 1 is a must!  Its a huge upgrade to your graph.

 

Anyway,  it must be run on a NMEA network.  What you will need is the Point 1 and an extra t connector. At least I did.  The units must be attached to the top of the T and the connectors must be connected together or by another NMEA wire with a dead end on any unused end.  This video from Lowrance will explain it.  The best suggestion I can give you is lay it all out on the deck of the boat and make sure everything hooks up correctly with all the parts then install.

 

 

 

Thank you!

 

You also need the starter kit.