1. Under the hood in the underhood fuse block/relay center: This is the most likely location. Look for a fuse/relay box usually near the battery or firewall. The relay itself might be labeled, or you can consult your owner's manual or a wiring diagram to identify it.
2. Inside the passenger compartment fuse box: Less common, but possible. Again, check your owner's manual or a wiring diagram.
To find it definitively:
* Consult your owner's manual: This is the best place to start. The diagram should show the location of all fuses and relays.
* Use a wiring diagram: A wiring diagram specific to your 1991 Camaro RS (with the engine type specified) will show the fuel pump relay's location and circuit. You can find these online through various automotive repair resource websites.
* Check online forums: Search Camaro forums specific to the 1991 model year. Other owners may have already discussed the location and provided pictures.
Remember to always disconnect the negative battery cable before working with electrical components. Be careful not to confuse the fuel pump relay with other relays in the box.
