To find the correct bulb size, I recommend:
* Checking your owner's manual: This is the most reliable source. The manual will list the correct bulb type and size for each light on your vehicle.
* Looking at the bulb itself: If you can access the bulb, the size and type are usually printed on the bulb itself.
* Using an online auto parts store website: Sites like AutoZone, Advance Auto Parts, or NAPA Auto Parts allow you to search by your vehicle's year, make, and model to find the correct bulbs.
Provide the specific light location, and I may be able to help you find the information online.