1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 281Get this manual
AC lighting Coil Resistance Check f61 1Calibrate ohmmeter on appropriate scaleConnect between yellowgray and yellow leads Meter must show 0.86 0.05 ohmfJ1 2Connect meter between yellowgray leads
and yellowblue
Meter must show 1.21 0.02 ohms3Calibrate ohmmeter on appropriate scaleConnect one lead to clean engine ground Probe each of the connector pins with the other ohmmeter jumper wire The ohmmeter should show high reading