* Under the bonnet (hood) in the fuse box: This is the most common location. The fuse box is often located near the battery, sometimes under a cover. Look for a relay that's clearly labelled or, if not labelled, check the fuse box diagram (usually located on the inside of the fuse box cover). It might be a larger relay than others in the box.
* Inside the passenger compartment fuse box: Less common, but possible on some models. Again, check the fuse box diagram for identification.
* Mounted on the engine itself: Though less likely, in some older vehicles, the relay might be mounted directly to the engine or its components.
To find it definitively:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram showing the location of all relays and fuses.
2. Use a wiring diagram: A wiring diagram specific to your Fiesta's year and model will show the exact location and path of the glow plug relay circuit. You can often find these online through auto parts websites or repair manuals.
3. Check online forums: Search online forums dedicated to Ford Fiestas or diesel vehicles. Other owners might have already discussed the location of this relay for your specific year and model.
Important Note: Before working with electrical components, always disconnect the negative terminal of your battery to prevent accidental shorts or damage.
