To find them, you'll need to consult your owner's manual. This manual will have a fuse box diagram showing the location of each fuse and what circuit it protects.
General locations to check in a 1987 Chevy Suburban:
* Under the hood: This is the most common location for a fuse box, often near the battery.
* Under the dash: There's usually another fuse block inside the vehicle, often under the steering wheel or on the driver's side dash.
Without the owner's manual:
Your best bet is to carefully examine both fuse boxes. Look for fuses that are labeled "headlights," "parking lights," or similar. If you're unsure, try to use a multimeter to test the amperage of each fuse to see if it's blown. Always disconnect the negative battery terminal before working with fuses and electrical components.
Remember, incorrect fuse replacement can cause damage to your electrical system. If you are uncomfortable working with your vehicle's electrical system, it is best to take it to a qualified mechanic.