1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 124Get this manual
15 DR4053
STEPRUNNING OUTPUT TEST
1Twist and remove all primary leads from ignition coils
2Use clockwise twist to install Stevens NoTS-77 terminal extenders, or equivalent, on ignition coil primary posts
3Install primary leads on terminal extendersObserve proper wire routingConnect orangeblue lead to No.1 coil, orangepurple lead to No.2 coil, orangegreen lead to No.3 coil, and orangepink lead to No4 coilmoving engine parts
INote Route all tester leads so they do not interfere with
4Set peak-reading voltmeter to "POS" and "500"
5Connect voltmeter red lead to No1 terminal extenderConnect meter black lead to clean engine ground