You have an error about HC Power for autosteer (SmarTrax?) but you reference checking power on the AccuBoom node.  That's something else.  SmarTrax could have a rectangular 'shortbox' or 'longbox' or more likely a node that looks a lot like the Accuboom node externally, but is a different device.  So first lets verify if you're checking power on the right node.  Pictures?

Not sure what you're referring to with the 3pin plug with 3 orange wires.  Generally that vintage of Raven tech would have 4pin CAN terminator.  If it was a 3pin CAN terminator it'd most likely only have 2 wires populated in A & B, and they would be Yellow and Green.  If there isn't a mating harness right by it, I think I'd ignore that for now and focus on finding the SmarTrax node.