Remote display and alarm problem from Yamaha 60HP
I'd welcome any suggestions to help with the following.
The gauge pictured currently works intermittently. Not simply on or off, but varying in intensity. Sometimes the LCD display (trim, rpm and oil) is very contrasty, other times very faint... And it fades in and out between the extremes.
No particular pattern to this - can be in or out of the water, before, during or after a run.
I'd initially thought low battery voltage, but multimeter and voltage display on chartplotter all show a decent 12.0 volts when idle / not running, and 14.6v when running and under load (ie charging).
In truth, I'm not that bothered about the rpm, trim and oil displays.
BUT what I do want to work is the engine over temp buzzer... I say that after it thankfully went off in the Pentland Firth the other week when a Tesco bag had fouled the water intake on the leg - not something you want to miss.
I mention the latter as when the display is of low contrast or off, the buzzer does not sound when you try to start with the engine up, and so I guess the over temp is not working either....?
As all these functions seem to go off at the same time, so my gut feeling was for a bad earth... But the fading in and out of the display, makes me wonder if it's something else, like some dodgy regulator etc???
Any suggestions welcomed.
Best wishes and thanks