To find it, you'll likely need to:
1. Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1995 Ford Ranger 4-cylinder will have diagrams showing the precise location of the CKP sensor. This is the best way to be sure.
2. Look near the crankshaft pulley: This is your starting point. The sensor is usually mounted on the engine block facing the crankshaft pulley. You might need a flashlight and possibly some maneuvering to see it clearly. It's often a small sensor with a single wire connector.
3. Use online resources: Search online for "1995 Ford Ranger 4.0L crankshaft position sensor location" (or the correct engine size) and look at images. Be aware that images might not always be perfect matches for your specific engine.
Caution: Before attempting any work on your vehicle, disconnect the negative battery cable to prevent accidental shorts. If you're not comfortable performing this task yourself, it's best to take your Ranger to a qualified mechanic.