Where is the relay switch for a 1987 Ford F-150?

The relay switch for a 1987 Ford F-150 is typically located in the engine compartment, near the battery or the firewall. It can be found in a relay box or mounted directly on the fender. For specific relays, such as those for the fuel pump or starter, it's best to consult the vehicle's service manual for precise locations. Always ensure the vehicle is off and take necessary safety precautions when working with electrical components.