Where is the headlight relay in a 1988 Ford Mustang?

The headlight relay location in a 1988 Ford Mustang isn't standardized across all models and trim levels. It's usually found in one of these locations, but you need to consult your owner's manual or a wiring diagram specific to your Mustang's year and model to be certain.

The most common locations are:

* Under the hood in the fuse box: This is the most likely place. The fuse box is usually located near the battery. The relay itself might be clearly labeled, or you might need to trace wires from the headlight switch to find it.

* Inside the passenger compartment fuse box: Less common, but possible depending on the specific configuration.

Without knowing the exact model (GT, LX, etc.) of your 1988 Mustang, it's impossible to give a definitive answer. Using a wiring diagram is crucial for accurate identification. You can often find these diagrams online through Mustang forums or parts websites.