1999 "EE" Evinrude 70HP 4-Stroke Service Manual, P/N 787023, Page 187Get this manual
Power Supply Troubleshooting- Remove electrical panel coverPower Supply Test
1Connect voltmeter red lead to top relay positive (forward) terminalConnect voltmeter black lead to clean engine groundMeter should indicate battery voltage 2Repeat test on lower relay If either test does not indicate battery voltage, check circuit to battery
3Connect ohmmeter between top relay ground post (lower) and clean engine groundMeter should indicate continuity4Repeat test on lower relay If either test fails to show continuity, check ground circuit
5Connect voltmeter red lead to top terminal of upper relayConnect black lead to top terminal of lower relay6Activate pan mounted trim switch "UP"Meter should read approximately battery voltage 7Reverse leads and activate switch "DOWN"Meter should read approximately battery voltage If battery voltage is indicated on both tests, go to Motor Test, No LoadIf battery voltage is not found in either or both tests, go to Switch and Harness Test