1998 Johnson Evinrude "EC" 25, 35 HP 3-Cylinder Outboards Service Manual, Page 116Get this manual
DRC6002
STEPIGNITION MODULE TEST
1Prevent accidental starting of engine while testing; twist and remove all spark plug leads
2Twist and remove primary lead from ignition coil
3Connect primary lead to Stevens PL-88 load adapter red leadConnect adapter black lead to clean engine ground
Notellf Stevens NoPL-88 is not available, you can make an adapter using 10-ohm, 10-watt resistor, Radio Shack No271-132, or equivalent