1991 Johnson/Evinrude EI 60 thru 70 outboards Service Manual, Page 296Get this manual
Troubleshooting Trim Gauge To avoid immediate meter damage, never apply an ohmmeter to an electrical circuit where voltage is presentr;J, 1Turn key switch ON and use voltmeter to check for voltage between trim gauge terminals "I" and
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
[!] 3With key switch ON, check for voltage at key switch "A" terminal 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 510884r:;l 4Turn key switch OFFRemove trim harness leads from gauge terminals "S" and "G"Calibrate an DOWNApproximately 88 ohms, engine fully UPapproximately ohm If your values are the same, replace trim gauge If your test results vary, go to Step 5