Well....it seems to happen to just me but I know others have problems also with new, out of the box products. I just received my brand new 898 SI unit for the bow of my boat and now can Ethernet with my 1198 console unit. But when I stated to put the unit together and install on my boat, you know the little "lock" screw/bolt that secures the wire harness to the back....well, for some reason, mine is not wanting to screw in. I check the one to the left and will not screw in that either. I called the wonderful folks at Humminbird Customer Service telling me one of two things I already figured out, either the screw/bolt threads are bad or the inserts ( female ) part is bad. They are sending me a new harness out today. First, can anyone tell me what size that is...a M4 metric maybe? I did find a screw that would semi fit and worked in all 4 holes so which tells me that the screw/bolt that came on this harness is bad. I sure hope so...I sure DON'T WON'T to send the head back and it brand new out of the box. Has anyone else had this problem. Question to Humminbird folks....why don't you make all 3 * 898, 989, 1198 ) harness wire connector the same. Just wondering if this is me or has anyone else had this problem. Also, i'm new to this Ethernet stuff. Can some help me on what can be done and what can't be done by using Ethernet? Any tips would be greatly appreciated or direction to learn.