1. Terminal 1: This terminal is connected to the positive (+) terminal of the ignition coil.
2. Terminal 2: This terminal is connected to the negative (-) terminal of the ignition coil.
3. Terminal 3: This terminal is connected to the distributor cap terminal that corresponds to the cylinder that is currently firing.
4. Terminal 4: This terminal is connected to the ground terminal on the distributor body.
The distributor cap also has a fifth terminal, which is used for the tachometer. This terminal is not connected to any of the other terminals on the distributor cap.
Here is a more detailed diagram of the Ford 5.8L distributor cap wiring:
[Image of Ford 5.8L distributor cap wiring diagram]
In this diagram, the terminals are numbered 1-5, corresponding to the terminal numbers listed above. The green wire is connected to the positive (+) terminal of the ignition coil, the black wire is connected to the negative (-) terminal of the ignition coil, the red wire is connected to the distributor cap terminal that corresponds to the cylinder that is currently firing, and the brown wire is connected to the ground terminal on the distributor body. The blue wire is not connected to any of the other terminals on the distributor cap.
This wiring diagram is for a general Ford 5.8L engine. The wiring diagram for your specific engine may vary, so be sure to consult your vehicle's service manual for the correct wiring diagram.