1990 Johnson Evinrude "ES" 40 thru 55, P/N 507872, Page 261Get this manual
AC Lighting Coil Resistance Check EJ between yellowgrey and yellow leads Meter must show O.86O.05 ohmf6l 1Calibrate an ohmmeter on the Rx1 scale and connect
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Connect meter between yellowgrey and yellowblue leads Meter must show 1.21 O.02 ohmsDR3072
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 (00If the ohmmeter reading is low, repair the grounded coil lead or replace the coil assembly If the ohmmeter reading is low, repair the grounded coil lead or replace the coil assembly