1990 Johnson Evinrude "ES" Electric Trollers Service Manual, P/N 507869, Page 33Get this manual
1224 Volt SwitchFoot Control Models
To avoid damaging components or troubleshooting equipment, disconnect the battery cables before proceeding
1Use continuity light or ohmmeter calibrated on high ohms scale to test continuity Meter must show continuity when connected between the two RED leads with switch on 24 Meter must show continuity when connected between the center RED lead and the WHITE lead with switch on 12 Meter must show no continuity between any lead and the switch's metal case Replace switch if your test results vary
2Refer to Section for assembly information 1224 Volt SwitchHand Control Models