However, you MUST check your distributor cap itself. The numbers 1-8 are usually stamped or molded onto the cap itself to indicate the correct cylinder. The firing order is only useful if you *don't* have these numbers to guide you. Always prioritize the numbers on the cap.
If the numbers are missing or illegible, then use the firing order, remembering that the distributor cap's rotor spins clockwise, and cylinder #1 is usually on the passenger side front. You'll need to trace the wires carefully to ensure you connect them correctly. A misfire or damaged engine is possible if you don't wire it correctly.
Caution: Working with the ignition system involves high voltage. Disconnect the negative (-) battery cable before working on the distributor to prevent accidental shocks or damage.