Need to replace the Speed Control. Ordered replacement part, identified as 9706649, however replacement part has only 4 primary connections, identified as Brown (P5), Motor 1 (P2), Blue (P3) and Motor 2 (P4), with an additional 3 prong connector identified as P7. Unfortunately, the original control has an additional connector labeled as "unswitched". It's called P5 as well, but is not located with the other primaries. Regardless, the old one has one additional connector. Upon going back through customer service, they confirm this is supposed to be the right part. How do I address the "extra" "unswitched' connection.