Can a headlight from 92 ford bronco work on 89 bronco?

It's *likely* but not guaranteed that a headlight from a 1992 Ford Bronco will work on a 1989 Ford Bronco. The biggest factor is whether the headlight connector and bulb type are the same. There's a chance Ford changed these specifications between model years.

To be sure, you should:

* Check the part numbers: Compare the part numbers of the headlights from both years. If they're the same, you're good to go.

* Compare the connectors: Physically compare the connectors on the back of the headlights. They need to be identical.

* Check the bulb type: Make sure both headlights use the same type of bulb (e.g., H4, 9003, etc.).

If the connectors and bulb types match, the headlights should be interchangeable. If there are differences, you might need to do some wiring adaptation or find a headlight specifically for the 1989 model. You might find this information by searching online parts databases for both year models.