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Old 16 May 2014, 17:37   #1
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Country: UK - England
Town: Northumberland
Boat name: Northern Storm
Make: North Diver?
Length: 4m +
Engine: Yamaha 90 Autolube
MMSI: 235096344
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What tacho lead?

Looking to nxt project and want to use mates 50hp 4 stroke to a 703 control box, what tacho lead/ harness is required? Also have not bought tacho guage yetClick image for larger version

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Old 17 May 2014, 03:29   #2
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Country: UK - Wales
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Boat name: Mellifera
Make: Avon
Length: 4m +
Engine: Outboard
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From memory and I am sure someone will correct me the tacho will plug straight into those three wires coming out of the control box.

Green- ac tacho signal
Yellow- switched +
Red- I guess non switched +

I think I also have a black coming out of my box that is -

I have a really vintage tacho that only plugs into the signal and ground wires but all of my previous ones take three, +,- and signal and some take the pink too.

And if a pink is coming out the box it is for the warning lamp or horn (mine is in the box)

Are the connectors in the engine end not connected to anything?
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Old 17 May 2014, 04:10   #3
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Country: UK - England
Town: Northumberland
Boat name: Northern Storm
Make: North Diver?
Length: 4m +
Engine: Yamaha 90 Autolube
MMSI: 235096344
Join Date: Aug 2012
Posts: 546
No not connected mate
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Old 17 May 2014, 04:52   #4
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Country: UK - Scotland
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Make sure you buy the correct tacho for this engine. You need the analog guage with the red oil warning lamp and a seperate trim guage.
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Old 17 May 2014, 05:00   #5
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Country: UK - England
Town: Northumberland
Boat name: Northern Storm
Make: North Diver?
Length: 4m +
Engine: Yamaha 90 Autolube
MMSI: 235096344
Join Date: Aug 2012
Posts: 546
Ah so can't have all in one type like on my old 90yam, the 4 wire lead with plug that's in my hand on pic is same wires on 90 yam.
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