I am confused!! I have a 1987 Evenrude 50 hp motor. I want to add a tachometer but not sure what configuration to get.<br /><br />This is where I get confused. I have checked my manual and can not find the answer. Some pages are missing. From what I can find on the Internet the motor is a 5 poll alternator. If so does the tachometer need to have a setting 5 on the back. I can find tachometers with settings of 4, 6, 8, and 10.<br /><br />Thanks for the help in advance.<br /><br />Larry