* Under the hood in the fuse box (also called the Power Distribution Center or PDC): This is the most common location. The fuse box is typically situated near the battery, often on the driver's side fender well. The relay itself might be labeled, or you might need to consult your owner's manual's fuse box diagram to identify it. Look for relays related to "ignition" or the starting system.
* Inside the car, often under the dashboard: Less common for the ignition relay itself, but some related relays might be found here. Accessing this area usually requires removing some trim pieces.
To find it definitively:
1. Consult your owner's manual: This is the best place to start. The manual will have a diagram of the fuse box(es) showing the location of all relays and fuses.
2. Use a wiring diagram: A wiring diagram specific to your 1998 Pontiac Bonneville (available online or from an auto parts store) will show the location and circuit for the ignition relay.
3. Check online forums: Search online forums dedicated to Pontiac Bonnevilles. Other owners may have already posted about the location of their ignition relay.
Important Note: Before working on any electrical components, disconnect the negative terminal of your battery to prevent accidental shorts or damage.
