How many relays are needed to wire door lock actuators for reverse polarity?

The diagram uses two relays, each with pins 30, 85, 86, 87, and 87a.

Where does the fused 12V(+) wire connect in this diagram?

The fused 12v(+) supply (red wire) connects to pin 87 of both relays.

Which relay pins connect to the alarm outputs?

The alarm (-) lock output connects to pin 86 of one relay, and the alarm (-) unlock output connects to pin 86 of the other relay.

Which relay pin goes to the actuators?

Pin 30 of each relay is wired to the actuators.

Are the alarm lock/unlock outputs positive or negative in this diagram?

They are negative (-) outputs, labeled 'alarm (-) lock output' and 'alarm (-) unlock output'.

Home/ Registry/ Ford/ Bronco/ 1992-1996/ “Bobby”/ Photo supermotors.net/registry/media/299590

Reverse Polarity Door Lock Actuator Relay Wiring Diagram - 2 Relay Setup

Reverse polarity actuator relay wiring diagram with 87, 87a, 85, 86 and 30 terminals

‹ ›

Reference · 1992-1996 BroncoAll 411 wiring diagrams

Ford Bronco/F-Series Power Door Lock Wiring Diagram - All Except Crew Cab

Reverse Polarity Door Lock Actuator Relay Wiring Diagram - 2 Relay Setup

5 Wire Alternating 12V Positive Door Locks Relay Wiring Diagram (the12volt.com)

Type C Reverse Polarity Keyless Entry Wiring Diagram - Power Door Lock Hookup

Aftermarket Alarm/Keyless Entry Wiring Diagram - Wire Color Pinout Chart

Close-up of wire chart for blower, parking lights, power lock/unlock and door trigger colors

Aftermarket install wire chart listing part, wire color and location for ignition, locks and lights

1996 Ford Bronco C202F 76-Pin Connector Pinout - EVTM Page 150-4

1994 Ford Bronco/F-Series C103 & C108 Connector Pinouts - EVTM Page 150-2

1994 Ford Bronco/F-Series EVTM 150-2: C103 & C108 In-Line Connector Pinouts

Ford Bronco VSS to PCM Wiring Diagram - Rear Axle Sensor, PSOM, ABS Circuit

1994 Ford Bronco/F-Series Instrument Cluster PSOM Wiring Diagram - EVTM 60-7

411wiring diagrams1992-1996 Ford Bronco More reference

Exploded parts

Ford EEC-IV Output State Check & Cylinder Balance Test - Code Reader Procedure

Service procedure

Spec plate

Manual page

1993 Ford V8 Serpentine Belt Routing Diagram - Pulley Layout (Q2601-E)

Schematic

Blueprint

1994-1995 BMW 3 Series Owner's Manual Booklet Set - Warranty, Radio & Accessories

Brochure

1995 Ford Bronco 5.8L Emissions/VECI Label - Vacuum Hose Routing Diagram

Vacuum routing

Ford Bronco/F-Series Fuse 18 (10A) - Speedometer, Air Bag, Shift Control

Fuse chart

Rod Bolt Stretch Monitoring Chart - 8-Rod V8 Connecting Rod Bolt Record Sheet

Torque spec

Wiring diagram of two relays configured for reverse-polarity actuators showing terminal numbers and fused 12V supply to the actuators.

Part of 1992-1996 Ford Bronco Wiring Diagrams

AI caption March 2006 · Photo 108 of 145

This document is a wiring diagram titled "Actuators / Reverse Polarity" showing how to wire two standard 5-pin automotive relays (pins 30, 85, 86, 87, 87a) to drive door lock actuators with reversed polarity from an alarm system's negative outputs. A fused 12V(+) source (red wire) feeds pin 87 of both relays. Pin 87a of each relay is connected to chassis ground. The alarm's negative lock output (green wire) triggers pin 86 of the left relay, and the alarm's negative unlock output (blue wire) triggers pin 86 of the right relay; pins 85 tie into the circuit to complete the relay coils. Pin 30 of each relay runs to the door lock actuators, so energizing one relay or the other reverses the polarity across the actuator motors, driving them to lock or unlock. The diagram was uploaded to a 1994 Ford Bronco gallery alongside other door-lock wiring documents, and appears to originate from the12volt.com based on the watermark. A reader can learn the relay pin connections needed to convert single-polarity alarm outputs into reverse-polarity actuator control.

Is this accurate? Sign in to help verify it.

Frequently asked questions

How many relays are needed to wire door lock actuators for reverse polarity?: The diagram uses two relays, each with pins 30, 85, 86, 87, and 87a.
Where does the fused 12V(+) wire connect in this diagram?: The fused 12v(+) supply (red wire) connects to pin 87 of both relays.
Which relay pins connect to the alarm outputs?: The alarm (-) lock output connects to pin 86 of one relay, and the alarm (-) unlock output connects to pin 86 of the other relay.
Which relay pin goes to the actuators?: Pin 30 of each relay is wired to the actuators.
Are the alarm lock/unlock outputs positive or negative in this diagram?: They are negative (-) outputs, labeled 'alarm (-) lock output' and 'alarm (-) unlock output'.