1993 Johnson Evinrude "ET" 60 thru 70 Service Manual, P/N 508284, Page 332Get this manual
Troubleshooting Trim Gauge To avoid immediate meter damage, never apply an ohmmeter to an electrical circuit where voltage is present
L!J between trim gauge terminals "1" and "G
1Turn key switch ON and use voltmeter to check for voltage If voltage, go to Step If no voltage, go to Step 2
2With key switch ON, check for voltage between trim gauge "G" terminal and Point V1 If voltage, check condition of accessory harness purple 16 gauge lead If no voltage, go to Step 3
f1l 3W!th key switch ON, check for voltage at key switch "A" L!J termmal If voltage, check condition of remote control purple 16 gauge leads If no voltage, check condition of key switch and engine harness 20 amp fuse PIN 510884Turn key switch OFFRemove trim harness leads from gauge terminals "S" and "G Calibrate an ohmmeter on low ohms scale and connect between the leadsTest results should be engine fully downapproximately 88 ohms, engine fully up approximately ohm If your values are the same, replace trim gauge If your test results vary, go to Step 5