yamaha wiring old engine new gauges

[Hooley123]

hi i am trying to connect a new tach with power t/t gauge but on the harness from the gauge i have a 4 way connector with pink,grey,green,green/red wires but on the engine i have pink,grey,orange,black
any help will be great thanks

[99yam40]

You may need to post your motor model and what gauge you have to get a good reply