1991 225 gauge wiring

[propadais]

I have a 1991 225 that came w/2 round muti function gauges and have no wiring diagram of how to hook up to the Ing./boat harness I beleive that I have hooked up the engine harness plug connectors correctly if any one has a wiring diagram and the color codes I would be in your debt
thank you for any and all help with solving my prolbem.

[boats.net]

No don't have diagram on older motor in .pdf, connect trim and oil harness from engine to gauge by matching connectors and connect yellow, red, green, black and blue wires from gauges to instrument harness and connect instrument harness to key switch matching color wires.