1990 Johnson Evinrude "ES" 60 thru 70 Service Manual, P/N 507873, Page 126Get this manual
116 STEPRUNNING OUTPUT TEST
1Twist and remove all primary leads from ignition coilsr.J6l 2in .a install terminal extenders Stevens Instrument NoTS-77 or equivalent, to Ignition cOil primary posts161 3Install primary leads on terminal extendersObserve proper wire routingConnect orangeblue lead to No.1, orangepurple lead to No.2, and orangegreen lead to No.3Note Route all tester leads so they do not interfere with moving engine parts4Set peak-reading voltmeter to "POS" and "500 r.J6l 5PRV meter red lead to No1 terminal extenderConnect meter black lead to clean engme ground