1996 Johnson/Evinrude Outboards 50 thru 70 3-Cylinder Service Manual, Page 140Get this manual
STEPRUNNING OUTPUT TEST
1Twist and remove all primary leads from ignition coils
2Use clockwise twist to install Stevens Instrument NoTS-77 terminal extenders, or equivalent, on ignition coil primary posts3Install primary leads on terminal extendersObserve proper wire routingConnect orangeblue lead to No.1, orangepurple lead to No.2, and orangegreen lead to No3