Update on my KN7 midi connection to Hammond sound module . It recently occurred to me their was one connection we had not tried to connect the keyboard to module . So I connected a midi cable to the KN out and looped it back to the KN in terminal . Then a second midi cable to the thru on the KN to the module controller and perfecto ! ! It worked just the way it is supposed to . Seems the midi thru filtered out whatever was incompatible between the two . Bob Hendershot suggested I buy a midi thru processor from midi solutions on Amazon , and that has eliminated the need for the loop , I go directly from KN midi out to the midi thru processor and out to the controller and all works great . I am now a happy camper . Thanks to all who tried to give help . Dick Bergin