Yes there is.
1) Open the wiring diagram .pdf.
2) Click File>Print.
3) In the pop-up print window, there should be a header halfway down named "Page Sizing and Handling". Under that header, there should be a selection button for "Poster" - click this. Below this, there should be a place you can input a different size "Tile Scale" to enlarge the poster size. Default is 100%.
In the window to the right of these selections there should be a preview window that will show you how many pieces of paper will be used and how the printout will appear on those pieces of paper.
More is more. Less is not enough.
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