I was going through I got 12.56v to the front little pad under the drivers area I had 12.5v at the starter I had between 5 and 6 at the 50 amp circuit breaker so I went back to the starter instead the stud for the battery and the other wires attached one was decently rusted and broke so that might me the issue but still doesn't solve why I don't have gauges or oil pressure warning buzzer. Unless it happens to be that set of red wires. Also I should be able to bridge the starter and see if the motor will crank at all correct?
Power goes from the starter post to the 50amp breaker.
Other side of breaker (red/purple wire) thru the 10 pin engine plug
Other side of 10 pin plug to 20 amp fuse at the helm and to the key switch
Key ON = powers purple wire which feeds gauges and motor back thru the 10 pin engine plug
So the red or red/purple wire broke this is the issue