What relays are in the Ford Bronco power distribution box?

According to the diagram, the right column contains the 4WABS Relay #2 (Pump, Bronco only)/Fog Lamp Relay (Lightning only), Trailer Marker Lamps Relay, Horn Relay, Fuel Pump Relay, and EEC Power Relay.

How are the fuse positions arranged in the power distribution box?

The left column contains positions A through K (bottom to top) and the middle column contains positions L through U, with positions K and M highlighted in red on this diagram.

What are the pin numbers on the relay shown in this diagram?

The relay diagram shows pin 87 at the top, pin 86 on the left, pin 85 on the right connected to ground, and pin 30 at the bottom.

Where is the 4WABS Relay #2 located and what vehicles use it?

It is at the top of the relay column in the power distribution box; the diagram notes it is the pump relay for Bronco only, and the same position serves as the Fog Lamp Relay on the Lightning only.

What amperage fuse is shown in the fuse block sketch?

The fuse block sketch calls out a 15 amp fuse and a 'Fuse Panel Power' terminal.

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Ford Bronco Power Distribution Box Diagram - Relay Layout & Fuse Positions

Ford power distribution box relay layout, fuse block, voltmeter and relay terminal reference

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Power distribution diagram showing relay socket map (EEC power, fuel pump, horn, fog/marker relays), a 15A fuse in the fuse block, plus voltmeter ground and relay terminal callouts 30/85/86/87.

AI caption April 2012 · Photo 1094 of 2216

This document is a composite reference sheet combining several small diagrams related to a Ford Bronco's electrical system. The main element is a 'Power Distribution' box layout showing fuse/relay positions labeled A through K in the left column and L through U in the middle column, with positions K and M highlighted in red. The right column identifies five relays: a 4WABS Relay #2 (Pump, Bronco only) which doubles as the Fog Lamp Relay (Lightning only), the Trailer Marker Lamps Relay, Horn Relay, Fuel Pump Relay (with terminals 87 and 30 noted), and EEC Power Relay. An EEC power diode is shown at the top left. A second sketch depicts a generic fuse block with a 15 amp fuse location and a 'Fuse Panel Power' terminal. A third diagram shows a voltmeter symbol wired to ground, and a fourth shows a standard Bosch-style relay pinout with terminals 87 (top), 86 (left), 85 (to ground, right), and 30 (bottom). A reader can learn the position layout of the power distribution box, which relays occupy the right-hand column, and how a common 4-pin/5-pin relay's terminals are arranged for wiring accessories like a fuel pump or voltmeter circuit.

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Frequently asked questions

What relays are in the Ford Bronco power distribution box?: According to the diagram, the right column contains the 4WABS Relay #2 (Pump, Bronco only)/Fog Lamp Relay (Lightning only), Trailer Marker Lamps Relay, Horn Relay, Fuel Pump Relay, and EEC Power Relay.
How are the fuse positions arranged in the power distribution box?: The left column contains positions A through K (bottom to top) and the middle column contains positions L through U, with positions K and M highlighted in red on this diagram.
What are the pin numbers on the relay shown in this diagram?: The relay diagram shows pin 87 at the top, pin 86 on the left, pin 85 on the right connected to ground, and pin 30 at the bottom.
Where is the 4WABS Relay #2 located and what vehicles use it?: It is at the top of the relay column in the power distribution box; the diagram notes it is the pump relay for Bronco only, and the same position serves as the Fog Lamp Relay on the Lightning only.
What amperage fuse is shown in the fuse block sketch?: The fuse block sketch calls out a 15 amp fuse and a 'Fuse Panel Power' terminal.