Your best bet is to:
1. Consult your owner's manual: This is the most reliable source. It will have a fuse and relay diagram specifically for your vehicle's configuration.
2. Check the fuse box diagrams: There are usually diagrams on the inside of the fuse box lid(s). Look carefully for a fuse or relay labeled "fuel pump," "EFI," or something similar related to the fuel injection system. Chrysler often used multiple fuse boxes (one under the hood and one inside the car).
3. Look in the Power Distribution Center (PDC): This is often a larger fuse and relay box, usually located under the hood. The diagrams on the cover should help you locate the correct relay.
4. Use a wiring diagram: If you can't find it visually, a wiring diagram specific to your 1991 Chrysler LeBaron's engine and options is necessary. You can find these online through automotive repair websites (often subscription-based) or at an auto parts store.
Important Note: Before working on any electrical components, disconnect the negative battery terminal to prevent accidental shorts or injury.
