1978 Chevy & GMC P10 P20 P30 Step Van Color Wiring Diagram

• Covers P10 P20 P30 Step Van
• Complete basic truck included (engine bay, interior and exterior lights, under dash harness, starter and ignition circuits, instrumentation, etc)
  
• Original factory wire colors including tracers when applicable
• Large size, clear text, easy to read
• Laminated for ease of use

Product images on our site are generic. The diagram you receive will be specific to your vehicle