Dash PNP Install Harness – 84-87 Grand National

Upgrade your Buick Grand National with ease using this Plug-and-Play Installation Harness, designed specifically for use with DD-EFI Digital Dash systems. It allows seamless integration using the vehicle’s factory wiring, making installation clean and straightforward. Key Features Plug-and-play design eliminates wiring guesswork Compatible only with DD-EFI Digital Dash systems Engineered for Grand National platforms Streamlined connections ensure a professional-grade install Compatibility Main Connector Types (Verify Before Ordering): V2/V3 8-Pin Connector V1 12-Pin Connector Note: This harness is only compatible with DD-EFI Dash units and is designed to connect directly to factory Grand National wiring harnesses. Installation Instructions Disconnect the vehicle battery Remove the factory instrument cluster Connect the DD-EFI harness to factory connectors Attach the other end to the DD-EFI Digital Dash Reconnect the batter