Welcome to our website! Make sure you check our new products!

High Quality wiring diagrams of electronic fuel injection (EFI) systems.

These diagrams show all connections from your car computer (ECU or ECM) to the different components, like relays, fuses, solenoids, switches, light bulbs, other electronic modules, ignition system, injectors, etc.

Great for troubleshooting electrical and mechanical problems. All are in Adobe Acrobat Reader's PDF format, which is freely available at Acrobat Reader.

All these are INSTANT DOWNLOADS. Once the purchase is completed, you will be able to instantly download the item(s) or you may do it later from "My Account" after logging in.

Recent Products - Wiring Diagrams

1997 Jeep Wrangler 4.0L Engine EFI Wiring Diagram
1997 Jeep Wrangler 4.0L Engine EFI Wiring Diagram
$2.99
2002 Dodge Intrepid 3.5L Engine EFI Wiring Diagram
2002 Dodge Intrepid 3.5L Engine EFI Wiring Diagram
$2.99
2002 Dodge Intrepid 2.7L Engine EFI Wiring Diagram
2002 Dodge Intrepid 2.7L Engine EFI Wiring Diagram
$2.99