Just got my new motor and dealer did not install the tach, but installed multi function gauge. So trying to install the tach, so do you just unplug the grey and black wire from multi gauge and wire the tach in series to the multi function gauge?
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Wiring 2016 225 4 stroke tach
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The multi function gauge has no tach, just engine monitors, temp, oil and waer pressure. The tach is 3.5" Suzuki 7000rpm, looks like Faria made, has wire harness with 2 gray, 2 black, and yellow wire is for signal, I see the yellow wire to plug that into from the wire harness. I see there is a 2 black(ground) wires running into monitor and 2 grey(positive) wires running into the monitor, they come from the motor wire harness. So question is do I unplug one wire from harness and hook up the tach grey in series to the monitor and same with the yellow? Not adding any NMEA.
Thanks
Troy
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Can you post a picture of the multi function gauge,
that would be very helpful to determine what gauge you are taking of?
Your 2016 225HP 4-stroke should have come either with the square C10 (if you are in the US) or a similar, but with round corners multi function gauges.
The other gauge would be a a older round, grey SMIS gauge.
Both of those gauges have tach, you just need to switch the pages.
Chris
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photo
here is a photo of the guage on back side there is pair of grey and black wire that connect into the harness, and a 4 wire plug that goes into harness.Attached Files
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This gauges is installed the one that is installed on my boat, so since most tachs come with a multi function gauge in them, I am wondering if it is safe to just plug the greys wire from multi gauge in series to the tach, and same with red, these are the pos and neg wire. there is a yellow for tach signal and see it under console for connecting.
Troy
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From what I understand you have a tach without the built in monitor functions, and that's why you also have a monitor gauge. On the monitor gauge; grey should be power, and black is ground. The four pin connector is for the monitor functions received from the engines ecm. On the Suzuki tach the gray wires are power, and the blacks are ground also. They are piggy backed wires so they actually run a parallel circuit to other components. You can use the monitors power and ground to power your tach if you want or vise versa. The yellow should be the tach signal, and only connect to the tach.Last edited by Nayna32; 10-19-2016, 12:44 AM.Henry
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