1992 Johnson Evinrude "EN" 40 thru 55 Service Manual, P/N 508143, Page 327Get this manual
Troubleshooting Trim Gauge
fN=J To avoid immediate meter damage, never apply an ohmmeter to an electrical circuit where voltage is presentf11 1Turn key switch ON and use voltmeter to check for voltage between trim gauge terminals "1and "G" If voltage, go to Step If no voltage, go to Step 2f11 2With key switch ON, check for voltage between trim gauge "G" terminal and Point Vl If voltage, check condition of accessory harness purple 16 gauge lead If no voltage, go to Step 3
key switch ON, check for voltage at key switch "A" 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 510884