:welomce: aboard FOur Winns No Losses. Good to have you join us...
First, some pictures of your issue would go a long way to explaining what you have to do to get access to the back of your speedometer gauge. I'm sure there is a way to either remove the gauge panel on your helm or to remove the actual speedometer gauge. And then you simple attach the little tube to the input on the gauge. The other end of the tube attaches to a pitot tube itself. So the water pressure is the only thing that goes to the speedometer gauge and not water itself like you would think... Hope that helps you out a little. But if you can post some pictures of your gauge panel and even a shot or two under the helm, we can offer further assistance... :thumb: