1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 266Get this manual
NO OIL Circuit
1Separate the VRO pump 4-pin Amphenol connector[[] 2Using jumper wire, connect the engine harness tan yellow wire, terminal "A", and black wire, terminal "B", together3Turn the key switch to ON positionAfter the normal self-test sequence, the gauge NO OIL light should stay on If the NO OIL light is not on, troubleshoot the tanyellow and black circuits for an open in the engine harness or the instrument harness4Turn the key switch OFF and reconnect all circuits disconnected during these tests5To verify the VRO pump warning circuit, refer to Signals, Section 2, NO OIL signal testWarning