I have a Cummins smartcraft display and I am attempting to connect it to my Simrad rudder angle indicator. I can find the "Steerage/Pilot" plug in the Smartcraft harness that it ties into I just do not know which two of the four wires tie into the rudder angle indicator. The software for the Smartcraft display is the most recent I believe it is 2.2 I am calling on all you electronic wizards or you internet gurus(Travis). Show me your stuff!!