2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 132Get this manual
ELECTRICAL AND IGNITION SystemCheck CIRCUIT TESTS
SystemCheck CIRCUIT TESTS
Make sure the SystemCheck engine monitor can alert the operator during "NO OIL," "WATER TEMP" or "HOT," "CHECK ENGINE," or "LOW OIL" conditionCheck the condition of the warning system and associated wiring and connectionsTest the engine monitor regularly and anytime you suspect an alert situation has been missedThe instrument harness must be connected to the outboard before performing the following testsRefer to the Engine Wiring diagram and the MWS Instrument Wiring diagram in the back of this manual
instrument harness terminal (purple wire) and terminal (black wire)1Test adapter(s) 2Connector, SystemCheck gauge 42761
IMPORTANT: Use jumper wires made with the
appropriate terminals to test the warning circuits