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.
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More is more. Less is not enough.
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