Unfortunately, I can't tell you exactly which *physical* location that is on the distributor cap without seeing a diagram specific to your vehicle's distributor. The number 1 terminal is usually marked on the distributor cap itself (it might be a "1" or it might have a different marking system, such as a specific color or position relative to other markings). If it's not clearly marked, you'll need to:
* Consult a repair manual: A Chilton's or Haynes repair manual for your specific year and engine will have a detailed diagram showing the distributor cap terminal arrangement.
* Use a wiring diagram: Your vehicle's wiring diagram should show the cylinder numbering and the corresponding distributor terminal.
* Carefully trace the wires: If you can trace the plug wire from cylinder #1 back to the distributor, that's the terminal. But be careful, as incorrect wiring can seriously damage your engine.
Important Note: When working on your distributor, make sure your ignition is OFF and the negative battery cable is disconnected to prevent accidental shocks or damage.
