S1000 smart pilot to A78

[ubettcha]

I'm getting a no link message when I try to start up my S1000 for the first time. I have wired it as such Course computer is powered to the house battery via fused link to switch provided. Pump is plugged into course computer and ground is direct to battery ground. Data out I removed the plug to access the nema connecting wires and have spliced them to the Seatalk ng wire with the yellow connector. Red/red yellow/yellow and black to uninsulated ground wire This is plugged into the converter block. I then ran a white spur cable from the block to the A78 withblanking plugs in the 3 unused ports. My LED blinks correctly when I power the GPS long then 3 short.
When I press the S100 I do not have any indicator bars above the signal indicator and I get the no link message.
What do I need to do to make this work?? The engine was off boaton the trailer.