Where can I find wiring and plumbing diagrams for 2004 SD 237 - 225 Yamaha

Just purchased a 2004 SD 237 - 225 Yamaha

  1. Where can I find a wiring diagram (bilge switch does not work)
  2. Suggestions to replace trim tabs that no longer work.
  3. Any other suggestions for rehabilitating the boat.
  4. Where can I find a diagram with the fresh water plumbing (pump turns on but nothing coming out.  Likely clogged lines after no use for 2+ years)
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