1999 "EE" Outboards Accessories Service Manual, P/N 787026, Page 142Get this manual
3 DRC6247
Trim Sender Troubleshooting
Note To avoid immediate meter damage, never apply an ohm, meter to an electrical circuit where voltage is present1Disconnect the 3-pin Deutsch connector between the instrument harness and engine trim harness
2Calibrate an ohmmeter on the appropriate scaleConnect the meter between whitetan wire, terminal "C"of the engine harness and clean engine groundWith the engine fully DOWN, meter must show reading above 80 ohmsWith the engine fully UP, meter must show reading below 10 ohms If your results agree, refer to Trim Gauge Troubleshooting If your results are different, replace trim sender