Just got off the lake on my 1997 1850 sportfish with a 175 mariner. I was not able to run the fish finder while the radio was on. Also when I press the horn it shuts off the fish finder. I can run the fish finder while the radio is off though. I had to charge one of the batteries and was wondering if it may be shot. Also with the fish finder on and running about 3500 rpm the voltage on the finder only reads around 9.0 / 8.9 while the voltage on the dash reads around 14.
Any advice. Connections looks good. Bad ground? or battery. Can use all the advice thanks.
Any advice. Connections looks good. Bad ground? or battery. Can use all the advice thanks.