Ford Bronco Fuel Pump Wiring Diagram - ECA, Relay, Inertia Switch, Wire Colors

This document is a simple hand-drawn wiring diagram for a Ford fuel pump circuit, uploaded to a 1980 Ford Bronco gallery. It shows the electrical path from the ECA (Electronic Control Assembly) to the fuel pump. The ECA connects via its FPM Pin #B through a brown wire to the Fuel Pump Relay. The relay has four labeled wire connections: Yellow, Tan-Lt Green, Red, and Brown. A brown wire runs from the relay to the Inertia switch. From the inertia switch, a Pink-Black wire runs down through a Bulkhead Connector. Below the bulkhead connector, the wire color is noted as unknown before reaching the Fuel Pump. The fuel pump also has a Black wire going to ground (indicated by a ground symbol). This diagram helps a reader trace and diagnose the fuel pump power circuit: computer control at the relay, safety cutoff at the inertia switch, and the pass-through point at the bulkhead connector. It contains no fuse ratings, part numbers, connector pinouts beyond FPM Pin #B, or year/model identification.