1995 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 119Get this manual
4 DRC6002 STEPIGNITION MODULE TEST 1Prevent accidental starting of engine while testing; twist and remove all spark plug
resistor, Radio Shack No271-132, or equivalent INote If Stevens Instrument No 4Set peak-reading voltmeter to "POS" and "500"
5Connect meter red lead to adapter red lead, and meter black lead to clean engine ground 6Crank engine and observe meter:
Meter must show 100 volts or higher If primary lead has good output, test ignition coilRefer to Ignition Coil Tests If primary