89 ranger won't fire

assume you have the 4.0 v6?

Here is how you diagnose what is going on. Verify the wires are not frayed or broken coming to the coil and that the ignition wires are in the correct order. This will walk you through it: http://easyautodiagnostics.com/ford/3.0L-3.8L/how-to-test-the-coil-pack-2