Therefore, the number 1 spark plug wire goes to the number 1 spark plug. To locate that, you'll need to:
1. Identify the number 1 cylinder: This is usually towards the front of the engine, on the passenger side (right side in the US). Look for casting marks on the engine block itself; the cylinder numbers are often cast directly into the block. Sometimes a diagram is stamped on the valve cover.
2. Locate the spark plug: Once you've found cylinder #1, the spark plug will be easily visible.
3. Connect the wire: Connect the spark plug wire marked "1" to the spark plug in cylinder #1.
Important Note: It's always a good idea to double-check your work with a reliable repair manual specific to your 1995 Ford E150 5.8L engine. Incorrect spark plug wire placement can lead to misfires and engine damage.
