Chaps please help.
My fish finder comes up with a 'Battery voltage high' warning and then it will shut down.
This happens whin the boat has been running at speed for about 20 to 30 mins.
My set up is a Yamaha 50 two stroke (circa 1995ish),Garmin fishfinder,single running light,Power is provided via a 85amp leisure power battery
A friend has mentioned to me to put another light on to use some of the excess current could this be right or any bright ideas gratefully recieved.