boat cranks but wont start

[Bend]

Not sure how to check the oil pressure switch. I did figure out that the wiring in the back of the engine was to bypass the oil pressure switch. Should I purchase a new one ($40)?? I should get 12.3 volts on the violet wire, shouldn't I? The red wire goes to the fuel pump so it should get its power from the purple when the ignition is turned to "on".

Again, I have confirmed that my wiring of the ignition switch is correct by the wiring diagram and the volt meter ....touching the red and the violet I get 12.3 volts in the "on" position. Nothing when in the "off" position. I mentioned earlier that the wiring diagram said "red/yellow" but I have "red" which I believe just bypasses the circuit breaker (The red has a constant 12.3v when connecting the volt meter and using a ground. Does that sound right?

Also mentioned before......if I have power for the violet wire at the switch but the gauges do not cycle or work, does that mean I have a disconnect in between? Could it be that the circuit board has gone bad?