NEED HELP Installing Tachometer R34

[Jonic]

NEED HELP Installing Tachometer R34

Installing a AfterMarket TachoMeter

So guys I'm trying to install a AfterMarket Tachometer on my R34 Skyline GTT 98. It's a Autotechnica one (Picture Below)

The Tachometer has RED 12v Wire
White (Lights up the Tachometer) Wire
Black (Ground Earth) Wire
& Green ( Tacho Sensor )

 

Now the only problem is I can't figure out what color my Tacho Wire is on my ECU

I've looked up the diagram and it says Pin 7 but what color would it be, its hard to see and trace back.
Someone has said Green/Yellow, some say Red/Yellow but which one is it, I don't want to cut the wrong wire.

And also where would be the best place to hook up the Red Power Wire and the White Wire.

 

I'm installing it on my Dash Cluster to replace my current one, because my Tachometer on my Original Dash isn't working properly
so I'm using this to replace it.

[Jonic]

R34 ECU.. so err which wire