The best approach is to:
1. Consult your owner's manual: This is the most reliable source for your specific vehicle's fuse box layout.
2. Look for a fuse box diagram: Often, there's a diagram on the inside of the fuse box lid itself, showing the location and function of each relay and fuse. This diagram may use numbers or symbols to identify the fuel pump relay.
3. Use a wiring diagram: If you can't locate the relay using the above methods, you'll need a wiring diagram specific to your 1989 Chevy Beretta. These diagrams are available online (often for a fee) or from automotive parts stores. The diagram will show you the relay's location and its circuit path.
Without a wiring diagram or a clear diagram on your fuse box lid, pinpointing the exact relay is difficult. It's usually a small, square or rectangular component that will click when you switch it on and off with a tester. Be careful when working with electrical components and always disconnect the negative battery terminal before working inside the fuse box.
