Zetec Conversion Wiring
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Mk2 Fiesta/Mk1 Mondeo Wiring Diagram
If you are wiring a Zetec into a Mk2 Fiesta and plan to use the standard fuel injection setup, then this diagram is for you. Sticking with the standard EFI setup is a popular choice due to simplicity of the conversion, and reliability of the converted car due to retaining a tried and tested package that Ford have spent a fortune developing and fine tuning. The diagram below shows which wires from the pre-pats Mondeo Mk1 loom should be connected up to the Fiesta loom to get it running. In our case we are using a 2-litre engine with a DEEP coded ecu.
A full pin-out diagram for the Mondeo ECU can be found on the Zetec ECU pin out chart page or alternatively, if you're struggling with finding a suitable ecu to use, a list of relevant Mondeo ECU codes is listed here.
Click the diagram below to view the large version. The coloured circles represent the colours of the wires in the looms.