Maybe they just don't do anything ... (or don't do anything on this model?)
Maybe they happen to be connected to +Ve ... because that's how they would be wired if they were on another system (that connects the other end to summat?)
I'd like to think they were there for a reason though .. (who would bother to add coils if they didn't have to .. saving money etc .. unless it's cheaper to stock a 'unversal' part ..?)
All the best ..
T i m