1. Open the driver's side door and locate the fuse box cover under the dashboard.
2. Remove the fuse box cover by pulling it straight up.
3. On the left-hand side of the fuse box, you'll see a black plastic connector with a 16-pin socket. This is the diagnostic connector.
Here are additional details and points to consider:
1. The OBD-II port in your 1996 Honda Prelude is a 16-pin connector.
2. To check why your engine light is on, you'll need an OBD-II scanner or code reader. These tools can be purchased online or at automotive stores.
3. Some auto parts stores also offer free OBD-II scans, so you may want to check if there's one near you.
4. Once you have the OBD-II scanner, plug it into the diagnostic connector and follow the instructions on the scanner to retrieve and interpret the diagnostic trouble codes (DTCs).
It's important to note that not all 1996 Honda Preludes are OBD-II compliant, as the OBD-II regulations came into effect in 1996 for vehicles sold in the United States. To be sure, you can check the emissions control information label under the hood of your car. If it states that the vehicle is OBD-II compliant, then the diagnostic connector should be present.