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Piper PA32R-300 Manual

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Does anyone have a source for wiring diagrams for a '77 Lance? I have Piper service manual #753-690 dated March 2008 that has somewhat incomplete wiring diagrams in section 10, but a number of the smaller systems such as the warning circuits, don't appear to be depicted.

One reference I haven't yet found is a circuit identification chart. I found a page that lists the group of circuits by the first letter, but nothing more. For example, W2B is warning circuit, but which one? Tugging on wires is a rather slow and inefficient method of circuit identification.

Thanks,
Jeff
 

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