Ford Ranger Maintaince And Repair Manual page 299

5. Tag and unplug all vacuum lines connected to the manifold.
6. Tag and disconnect all electrical wires attached to the upper manifold assembly.
7. Relieve the fuel system pressure.
Also, ensure that any brackets which are bolted to the manifold are unfastened
8. Tag and remove the spark plug wires.
9. Remove the EDIS ignition coil and bracket.
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HOW TO USE THIS BOOK
... and the electrical harness plugs
REMOVAL & INSTALLATION