1989 Johnson Evinrude "CE" 9.9 thru 30 Service Manual, P/N 507754, Page 127Get this manual
1101 STEPRUNNING OUTPUT TEST
1Twist and remove primary leads from ignition coilsf101 2-r:wisting in .a install terminal extenders Stevens Instrument NoTS-77 or to Ignition cOIl primary postsf101 3Install primary leads on terminal extendersObserve proper wire routingOrangeblue primary lead must be connected to the No.1 ignition coilNote Route all tester leads so they do not interfere with moving engine parts
4Set peak-reading voltmeter to "POS" and "500
f101 5PRV meter red lead to No1 terminal extenderConnect meter black lead to clean engine ground