5-Pin Automotive Relay Pinout Diagram – Terminals 30, 85, 86, 87, 87a

This document is an unlabeled schematic illustration of a common 5-pin automotive relay, uploaded to a 1990 Ford Bronco gallery. The left half shows the physical relay base with the blade terminal layout: terminal 5 at top (horizontal blade), terminal 4 in the center (horizontal blade), terminal 2 on the left, terminal 1 on the right, and terminal 3 at the bottom. The right half shows the internal electrical schematic and maps each physical pin number to its standard relay terminal designation: pin 4 = 87a, pin 5 = 87, pin 1 = 85, pin 3 = 30, and pin 2 = 86. The schematic depicts the switched contact arm resting from terminal 30 (pin 3) toward terminal 87a (pin 4), indicating the normally-closed contact, while the coil element between terminals 85 (pin 1) and 86 (pin 2) is drawn with a resistor in parallel across it. A reader can use this diagram to identify which physical blade on the relay corresponds to which circuit function (power input 30, normally-open output 87, normally-closed output 87a, and coil terminals 85/86) when testing, wiring, or replacing a relay. The document contains no year, make, model, or part number text.