I have a boat that the previous owner installed a Yamaha analog tach that also has the 3 lights to show the oil level. The motor is a 2006 Yamaha 40 2 stroke. I would like to hook up the oil reading lights on the tach from the motor. The previous owner did not hooked up the led lights to show the oil levers. Anyone know how to hook up the tach so it will show the oil levels?
