Mercruiser Engine Alarm with Smartcraft connection

[Axlthepaxl]

Hi i wanted to connect the smartcraft data to the raymarine axiom + by using the smartcraft connector to nmea2000. Worked but the Mercury app on the axiom did not show any data. Now i bought the original mercury connect interface 8M0173694. For the wiring i connected a junction box to the sc harness and connected it to the interface. It is connected to the axiom but after a few seconds the mercruiser engine alarm starts with a continous alarm. When i just connect the gauges to the jbox everything is ok no alarms shown.
Does anyone have an idea what happens to the smartcraft System? My guess was maybe the terminator but as far as i know no data would be shown on the plotter.
Cheers axel