1993 Johnson Evinrude "ET" Electric Outboards Service Manual, P/N 508280, Page 35Get this manual
1224 Volt SwitchFoot Control Models
INote To avoid damaging components or troubleshooting equipment, disconnect the battery cables before proceeding 1Use an ohmmeter calibrated on high ohms scale or continuity light to test continuityWith switch at 24 volt, meter must show continuity when connected between the two RED leads
With switch at 12 volt, meter must show continuity when connected between the center RED lead and the WHITE Meter must show no continuity between any lead and the switch's metal case Replace switch if your test results are different
2Refer to Section for assembly information 1224 Volt SwitchHand Control Models