The boom speed sense node does not have lights on it. You need to swap out for a new node before any other diagnosis can occur.Does the node have all the lights working on it? Should have CAN RX and CAN TX flashing when it is .
I would be looking at those CAN/BUS terminators before trying to get hold of a expensive part to change out. I'm not saying the node isnt the problem, there are just other ways to eliminate that he can do right now without having another part.The boom speed sense node does not have lights on it. You need to swap out for a new node before any other diagnosis can occur.