* Under the dash: This is a common location for relays. You might find it in a fuse box or relay panel under the dashboard, often accessible by removing a panel near the driver's side knee area.
* Under the hood: Less common for the blower motor relay specifically, but some GM vehicles place relays in the under-hood fuse box.
* Inside the blower motor housing: In some cases, the relay is mounted directly on the blower motor itself, within the housing located behind the glove box. This is less likely, but possible.
To find it, you should:
1. Consult your owner's manual: This is the best place to start. The manual should have a diagram showing the location of fuses and relays.
2. Check the under-dash fuse box: Look for a panel labeled "fuses" or "relays". There should be a diagram on the inside of the cover that shows what each fuse and relay controls.
3. Check the under-hood fuse box: If you don't find it under the dash, check the fuse box under the hood. Again, look for a diagram.
4. Use a wiring diagram: A wiring diagram specific to your 1993 Pontiac Sunbird LE will show the blower motor circuit and pinpoint the relay's location. You can often find these online through automotive parts websites or repair manuals.
If you're not comfortable working with car electronics, it's best to have a qualified mechanic locate and check the relay. Improperly handling relays or fuses could damage your vehicle's electrical system.
