1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 302Get this manual
AC Lighting Coil Resistance Check 1cl 1Calibrate an ohmmeter on the Rx1 scale and connect between yellowgrey and yellow leads Meter must show 0.86 0.05
yellowblue
f71 2Conn{ ect meter between yellowgrey Meter must show 1.21 0.02
1al 3Calibrate the ohmmeter on the Rx100 scale and connect one lead to clean engine ground Probe each of the connector pins with the other ohmmeter jumper wire The ohmmeter should show very high reading (00) If the ohmmeter reading is low, repair the grounded coil lead or replace the stator assemblyRefer to Section for ignition plate servicing