NEED HELP.... Swapping Old Yamaha Digital Gauge for new

[RJaxtheimer]

Going to start by saying I am a total electronics newbie. I am trying to swap my old Yamaha Digital Multifunction Tach Gauge for a newer one I recently bought. The boat is new to me but I believe the old gauge was a 94 or 95' . The engine is a 95'.

I have read http://www.mbcboats.com/perfbull/YamahaMFGaugeKitInstall.pdf but it is confusing me a good bit.

This is what I have as far as wires.

My old gauge had: gauge side INTO engine side
Yellow INTO Yellow
Blue INTO Blue
Black INTO Black
Solid Green INTO Solid Green
Green/red, Green/white plug INTO Green/red, Green/white plug
Pink, Grey, Orange, Black/white plug INTO Pink, Grey, Orange, Black/white plug


My old gauge had: gauge side INTO engine side
Yellow INTO Existing Yellow
Blue INTO Existing Blue
Black INTO Existing Black
Solid Green INTO Existing Solid Green
Pink, Grey, Green/red, Green/white plug INTO ???????

Those last question marks is where I am lost. On the engine side of the connections I have the two plugs left. Green/red, Green/white plug and the Pink, Grey, Orange, Black/white plug.. If I were to remove the plug pieces and do individual connections.... (Pink to Pink, Grey to Grey, Green/red to Green/red, Green/white to Green,white)
I would have the Orange, and Black/white wires left going to nothing on the gauge... Is this how this is to be done?


Thank you guys for trying to understand.


1st pic : Old Tach
2nd pic : New Tach
3rd pic : New Speedo

 

[rodbolt]

Re: NEED HELP.... Swapping Old Yamaha Digital Gauge for new

thats a -90 tach,new one.
not reccomended for 2004 and older yamaha product.
can be made to work but it requires shifting some wires and the trim meter function wont work.
best to find the correct part number and its then plug and play.
you need the -81 or -82 tach.