Convert old trim gauge to new type wiring help

[Hooley123]

Hi I have removed an old type yamaha trim gauge and want to replace it with a new round digital 6Y5-281R-32 tach and trim type
But the wires from the outboard are orange,pink,grey and black but on the new harness to the gauge they are pink,grey,green and green with a red strip down the middle can anybody help with this ?
The outboard engine is 50 hp 3 cylinder but not sure of year

[boats.net]

Take a picture of back of both tachs so we can see what wire connectors each one has.