To be certain, you should:
* Consult your Jeep Wrangler's repair manual: This is the most reliable source of information for your specific model.
* Look up diagrams online: Websites like Jeep forums or parts websites often have diagrams showing the location of the oil sending unit. Search specifically for your year, make, model, and engine.
Accessing it usually requires getting under the vehicle. Be prepared to get dirty and have the correct tools.