I have 1996 twin 150 Mariners. One tachometer quit working. If I switch all of the wiring to the other tach, it works. So I know it is not the gauge itself. I ohmed out the signal wire from the motor to the console, and the wire itself is okay. What is the circuit board box on the back of...
After all day fishing trip on the way back in, I got a constant beep, beep beep alarm on one of my two engines. Checked for obstructions on the primary water intakes and cleared a little vegetation. Thought we might have overheated. Got the motor home and it is still giving me the alarm...
