Maybe I didn't explain this thoroughly enough. Let's take for example this Kent breaker. The
right side hose is designed to connect to the right side of the excavator's/backhoe's stick while the
left side hose is designed to connect to the left side of the excavator's/backhoe's stick. So if I
connect the left side hose on the breaker to the right side of the excavator's/backhoe's stick and vice versa for the other hose, then the attachment's motor's going to get all messed up.
That's what I mean when I say "if I connect the wrong hose to the wrong side, then the attachment's motor is going to get all messed up or the attachment cylinder circuit is going to be reversed (left is right and vice versa)". This same thing applies to hoe packs and 360 degree rotating attachments (shears, processors, clamshell buckets, etc.).
So how do I know which hose connects to which side of the excavator's/backhoe's stick? This is why I compared this to a diamond blade on a hand-held cut-off saw spinning in the wrong direction of the arrow engraved on it's blade. And yes, looking at that Allied Hoe Pack in the video I provided, the hose connectors on that loader connected to the hoe pack look the same.