Adding to what Steve has said here are a few items that should help you. Attached is what I have written on the vacuum hose routing. Also attached is a diagram from the master parts book. Although it looks like it is for a 41, it might help you. Attached below are some pictures which I took of my 47 vacuum lines. It gets a little confusing when you have a radio and windshield washers. Make sure before you start running the lines to the wiper motor that YOU KNOW you have good wiper motor. Removing the radio and then laying on your back pulling vacuum line is not my idea of a good time. Please email me at inglerfly@cox.net if you have further questions. Bill