Re: What was Volvo thinking when they wrote this manual???
The rubber plug on the end of the wires inside the boat will not fit through the hole in the transom shield (at least they used to not fit, may have changed now), so you must remove the wires from the plug using the special tools. When you put the new sender in, you have to put the new wires inside the plug. Using alcohol makes the job easier, especially if you don't have the tool and are trying to push it in with a very small screwdriver.