* Under the hood in the fuse box: This is the most common location. The fuse box is usually located near the battery or on the firewall. Check carefully inside the fuse box cover; often a diagram is printed showing the relay locations.
* Under the dash: Less common, but possible. Check your owner's manual or a wiring diagram specific to your vehicle's options (A/C, etc.).
* On the radiator support: While less common in this year, some vehicles placed relays directly on the radiator support or nearby.
To find it definitively:
1. Consult your owner's manual: This is the best starting point. It will have a fuse/relay box diagram.
2. Locate the fuse box diagrams: Even without the manual, diagrams might be printed inside the fuse box cover itself.
3. Use a wiring diagram: A wiring diagram specific to your 1986 Chevy Celebrity (you'll need to know the engine size and options) will pinpoint the relay's location and associated circuits. You can find these online through resources like Haynes or Chilton repair manuals.
4. Trace the wiring: If all else fails, you can trace the wiring from the cooling fan motor back towards the fuse box or other likely areas. Look for a multi-wire connector leading to a relay.
Remember to disconnect the negative battery terminal before working with any electrical components. Be careful not to mistake other relays for the fan relay. If you are unsure, it's best to seek help from a qualified mechanic.
