1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 332Get this manual
AC Lighting Coil Resistance Check
INote This test is made with
an ohmmeter and jumper wires to insert into the AC lighting connector
1Calibrate an ohmmeter on the low ohms scale and connect one ohmmeter jumper lead to the connector yellow grey lead Connect the other ohmmeter jumper lead to the connector yellow lead Ohmmeter should read 0.86
2Move the ohmmeter jumper lead from the connector yellow lead to the connector yellow blue lead Ohmmeter should read 1.21 .02 (0,)