To be certain, you'll need to:
1. Consult your owner's manual: This is the best source for the specific location for your vehicle.
2. Look at a repair manual specific to your vehicle's engine: This will have diagrams and detailed information.
3. Search online for a diagram of your specific engine: Many websites, including some parts retailers, have engine diagrams. Make sure you enter the correct engine code (often found on a sticker under the hood) to find the correct diagram.
Looking at the engine itself is also helpful. The sending unit is typically a small, cylindrical unit with one or more wires connected to it. It's usually fairly accessible, but be careful working near hot engine parts.
