Have a 1988 Evinrude 140 that does not stop! First I could not get it started. Have cleaned all electrical connections. After cleaning it started but did not stop. A week later no spark on the plugs. Have changed power pack (then it started but no stopping)and changed the ignition switch. Still starts but no stopping. Have measured connection of Yellow+red wire all the way into the powerpack and there is a signal closing when key is turned off. Any idea? (99% sure I have wired correctly, have diagram)