* Online Forums: Search car audio forums (like those on Reddit, specialized car audio sites, or Pontiac-specific forums). Someone might have scanned a diagram or posted a picture of one from their repair manual. The quality and accuracy may vary significantly.
* Used Repair Manuals: Check online marketplaces like eBay or used bookstores for a used repair manual for a 1995 Pontiac Bonneville. These often include wiring diagrams. This is the most reliable method but incurs a cost.
* Library: Your local library might have access to repair manuals through a subscription service.
* Online Parts Stores: Some online parts retailers (like AutoZone or Advance Auto Parts) may offer free basic wiring information, but it's often not as comprehensive as a full diagram.
Important Note: Any free diagrams found online are likely to be of lower quality and potentially inaccurate. Using an inaccurate diagram could damage your car's electrical system. If you're not experienced with car electrical systems, it's strongly recommended to invest in a reliable repair manual or seek professional help. The cost of professional installation or repair is likely much less than the potential cost of damaging your car's electrical system.
