Re: System check not working on brand new Evinrude
system check gauge wiring<br /><br /> here's the pin configuration (looking at the back-side of the gauge, holding it upright):<br /><br />1-2-3-4<br />8-7-6-5<br /><br />Purple wire goes to pin 1 - 12V positive<br />Black wire goes to pin 2 - ground (earth)<br />Gray wire goes to pin 3 - tach signal<br /><br />Grounding these pins, will activate the following:<br /><br />Pin 4, turn on no oil lite<br />Pin 5, turn on low oil lite<br />Pin 7, turn on check engine lite<br />Pin 6, turn on hot lite<br /><br />Pin 8, is used to activate the warning horn, it supplies a ground to the horn circuit when any other warning circuit (pins 4 thru 7) is grounded