I have a 1979 Johnson 150 Model #150TL79C and my boat was never equipped with a water pressure gauge. I am looking to put one on my boat since it has a jackplate and I want to adjust it but I am concerned about water pressure. Where should the water pressure be connected to the engine. I am not familiar with installing one of these and didn't know if I could just tee into the line for the pee stream or if there was a better place to install it to get a more accurate reading. any help would be greatly appreciated.
