1996 Johnson Evinrude "ED" Electric Outboards Service Manual, P/N 507119, Page 48Get this manual
oMotor Tube WiringResistorHand Control Models
INote To avoid damaging components or troubleshooting equipment, disconnect the battery cables before proceeding
1Remove the steering housing cover
2Turn speed control switch to OFF3Use an ohmmeter calibrated on low ohms scale to test the condition of the resistor assembly and motor tube wiring
4The terminal numbers and their locations on the speed control switch are as shown (terminal side of switch)
5Connect the ohmmeter between the terminals with the RED and GREEN leads (terminals "1" and "2", 12 Volt, terminals "2" and "4", 24 Volt): The meter should show 0.18-0.22 ohm resistance If measured resistance is significantly different AND motor does not respond to speed control change, refer to Resistor AssemblyExcept HBF2 in this section
6Connect the ohmmeter between the terminals with the GREEN and GREENWHITE leads (terminals "2" and "4",12 Volt, terminals "4" and "3", 24 Volt): The meter should show 0.36-0.44 ohm resistance If measured resistance is significantly different AND motor does not respond to speed control change, refer to Resistor AssemblyExcept HBF2 in this section