You will have to splice wires if you have a "universal" fit sensor. Look at what you have. A "direct fit" sensor will be complete wiring harness with a plugin connector on one end. A "universal" sensor will just have four wires (1 black, 2 white and one gray) and you should have a splice kit also. This is usually a square plastic box deal with water proof washers and 4 twist on "bullet" wire splices that you use to join your wires together from the new sensor to the old plug. . Just remove the old sensor from the pipe and disconnect its connector up in the engine bay so you can take it in the house and work on the kitchen table. The splice kit is easy to use, just make certain you connect the correct wire ends together (black to black etc) If you don't have a splice kit, your;re sorta stuck soldering the individual wires together and covering the splices with shrink tubing or (not the best way) using crimp on connectors. Take your time and you'll do fine.

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