2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 291Get this manual
TRIM AND TILT REMOVAL AND INSTALLATION
Trim Sender Test
IMPORTANT: To avoid immediate meter damage, never apply multimeter to an electrical circuit where voltage is presentDisconnect the 3-pin Deutsch connector between the instrument harness and engine trim harnessConnect an ohmmeter between the whitetan wire, terminal "C," of the engine harness and clean engine groundWith the outboard fully DOWN, meter must show reading above 80 With the outboard fully UP, meter must show reading below 10 If results agree, refer to Trim Gauge Test on p290 If results are different, replace trim sender