Battery Lights ?

[Skullduggery]

Can anyone give me any information on my battery lights ?
I've got a Falcon 275 with twin volvo diesel's (150hp AD31) and when I turn the ignition on the lights come on as they should and when I start the engines the lights go out... so far so good, but after running for a while they start to flash ! Does this mean there's something wrong or does it mean that the batterys are fully charged ?
She has three battery's and the Sterling prodigital charger is always connected when shes in the marina.
If its a problem does anyone have the answer ? Ta....

 

[gary111160]

Do they do this on both engines? I would assume the lights are for oil pressure and charging that go off after starting to show all is well. if a light came on It could be to indicate charging fault or low oil pressure but if both come on thats a coincidence and if all come on for both engines to much of a coincidence. I would suspect wiring fault. But im no expert. Others better qualified will soon come along.

 

[Skullduggery]

No it's not the oil lights, Just the battery lights and they dont just come on, which I would understand to mean the battery wern't charging, they start flashing ?
Oil pressure guages tell me thats OK and the ammeters show 13 to 14 volts.
Both the battery lights flash but they dont start at the same time, also if I drop the engines to tickover they go out !

 

[gordmac]

Do you have voltmeters rather than ammeters? Sometimes you get the warning light on when the alternator produces too high a voltage. 13-14V would be about right though.