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Mitchell1's Wiring Diagrams

Mitchell1(R) obtains wiring diagrams and technical service bulletins, containing wiring diagram changes, from the domestic and import manufacturers. These are checked for accuracy and are all redrawn into a consistent format for easy use. All system wiring diagrams are available in black and white format and may be printed depending on your program settings and available printer hardware.

In the past, when cars were simpler, diagrams were simpler. All components were connected by wires, and diagrams seldom exceeded 4 pages in length. Today, some wiring diagrams require more than 16 pages. It would be impractical to expect a service technician to trace a wire from page 1 across every page to page 16.

Removing some of the wiring maze reduces eyestrain and time wasted searching across several pages. Today, the majority of Mitchell1(R) diagrams follow a much improved format, which permits space for internal switch details, and component and ground locations.

Components shown with a dashed line instead of a solid line indicate not all circuits are shown in this particular diagram (circuits shown in system diagrams are typically applicable to that system only). The remaining circuits connected to that component will be shown in the appropriate system that they apply to.

Today, the wiring diagram necessary to support a given repair procedure is included within that article or a link is provided to the appropriate SYSTEM WIRING DIAGRAM article. For example, the wiring diagram for a Ford EEC-IV system may be included in ENGINE PERFORMANCE and WIRING DIAGRAMS articles for Ford Motor Co. The wiring diagram for a cruise control system may be included in ACCESSORIES & EQUIPMENT section for the specific vehicle manufacturer, and the wiring diagram for an anti-lock brake system may be included in BRAKES and WIRING DIAGRAMS for the specific manufacturer.

WIRING DIAGRAMS contains all wiring diagrams not included in STARTING & CHARGING SYSTEMS and ACCESSORIES & EQUIPMENT. This includes: Data Link Connectors, Ground Distribution, Power Distribution, Engine Performance, Electric Cooling Fans, Anti-Lock Brakes, Electronic Suspension and Electronic Steering wiring diagrams. The Data Link Connectors wiring diagrams show the circuits by which the various on-board computers exchange information, and the diagnostic connectors used for diagnosis and their location. The Ground Distribution wiring diagrams show all vehicle ground points, their location, and the components common to those ground points. The Power Distribution wiring diagrams show the power feed circuits and the components common to those power feeds.

Wiring diagrams used to support the information in ACCESSORIES & EQUIPMENT are drawn in a "top-down" format. The diagrams are drawn with the power source at the top of the diagram and the ground point at the bottom of the diagram. Component locations are identified on the wiring diagrams. Any wires that do not connect directly to a component are identified on the diagram to indicate where they go.



Color Normal Optional
Black BLK BK
Brown BRN BN
Clear CLR CR
Dark Blue DK BLU DK BU
Dark Green DK GRN DK GN
Green GRN GN
Light Blue LT BLU LT BU
Light Green LT GRN LT GN
Orange ORG OG
Purple PPL PL
Violet VIO VI
White WHT WT
Yellow YEL YL


When trying to locate a component in a wiring diagram and you don't know the specific system where it is located, use this handy component locator to find the system wiring diagram in which the component is located. Then, go to that system and locate the component within the wiring diagram.

For example, if you don't know the specific system in which the ignition switch is located, look up ignition switch in the wiring diagram component location tables and go to the appropriate wiring diagram(s) which contain either full or partial views of the ignition switch. The full view of the ignition switch is located in Power Distribution.

The first listing for the component will be the full or most complete view of the component. Additional listings will be partial views of the component. Not all components are used on all models.

All components will have a partial view in Ground Distribution and Power Distribution. Data Link Connectors show connecting circuits between modules. Alternate names for components may be listed in wiring diagram component locations tables.

Component Wiring Diagram
ABS Electronic Control Unit Anti-Lock Brakes; Data Link Connectors
ABS Hydraulic Unit Anti-Lock Brakes
Acceleration Sensor Anti-Lock Brakes
Accessory Delay Relay Power Windows
A/C Compressor Clutch Relay Engine Performance
A/C Sensor Engine Performance
A/C Pressure Switch Engine Performance
Adaptive Lamp Control Module Exterior Lights
Air Bag(s) Air Bag Restraint System
Air Bag Module Air Bag Restraint System
Air Bag Sensor(s) Air Bag Restraint System
Air Injection Pump Relay Engine Performance
Air Temperature Sensor Overhead Console
Alternator (Generator) Generators & Regulators
Anti-Theft Control Module Anti-Theft System; Starters
Autolamp Control Relay Headlight Systems; Daytime Running Lights
Automatic Shutdown (ASD) Relay Engine Performance; Generators & Regulators
Autostick Switch Engine Performance
Auxiliary Battery Relay Generators & Regulators
Back-Up Lights Back-Up Lights; Exterior Lights
Barometric (BARO) Pressure Sensor Engine Performance
Battery Power Distribution
Battery Temperature Sensor Engine Performance
Body Control Module Body Control Computer; Anti-Theft System; Daytime Running Lights; Engine Performance; Headlight Systems; Warning Systems
Boost Control Solenoid Engine Performance
Boost Sensor Engine Performance
Brake Fluid Level Switch Analog Instrument Panels
Brake On/Off (BOO) Switch Cruise Control Systems; Engine Performance; Shift Interlock Systems
Buzzer Module Warning Systems
Camshaft Position (CMP) Sensor Engine Performance
Central Control Module Anti-Theft System
Clockspring Air Bag Restraint System; Cruise Control Systems; Steering Column Switches
Clutch Pedal Position Switch Starters
Clutch Start Switch Starters
Combination Meter Analog Instrument Panels
Constant Control Relay Module (CCRM) Engine Performance; Electric Cooling Fans
Convenience Center Power Distribution; Illumination/Interior Lights
Convertible Top Motor Power Convertible Top
Convertible Top Switch Power Convertible Top
Crankshaft Position (CKP) Sensor Engine Performance
Cruise Control Module Cruise Control Systems
Cruise Control Switch Cruise Control Systems
Condenser Fan Relay(s) Electric Cooling Fans
Data Link Connector (DLC) Engine Performance
Daytime Running Lights Module Daytime Running Lights; Exterior Lights
Defogger Relay Rear Window Defogger
Diagnostic Energy Reserve Module (DERM) Air Bag Restraint System
Discriminating Sensor (Air Bag) Air Bag Restraint System
Distributor Engine Performance
Door Lock Actuators Power Door Locks; Remote Keyless Entry
Door Lock Relay(s) Power Door Locks
Electrochromic Mirror Power Mirrors
Electronic Level Control (ELC) Height Sensor Electronic Suspension
Electronic Level Control (ELC) Module Electronic Suspension
Engine Coolant Temperature (ECT) Sending Unit Analog Instrument Panels
Engine Coolant Temperature (ECT) Sensor Engine Performance
Engine Control Module Engine Performance; Generators & Regulators; Starters
ETACS ECU Warning Systems; Power Windows; Remote Keyless Entry
Evaporative (EVAP) Emissions Canister Engine Performance
EVAP Canister Purge Solenoid Engine Performance
EVAP Canister Vent Solenoid Engine Performance
Exhaust Gas Recirculation (EGR) Valve Engine Performance
Fuel Tank Vacuum Sensor Engine Performance
Fog Lights Headlight Systems; Daytime Running Lights
Fog Light Relay Headlight Systems; Daytime Running Lights
Fuel Door Release Solenoid Power Fuel Door Release
Fuel Gauge Sending Unit Analog Instrument Panels
Fuel Injectors Engine Performance
Fuel Pump Engine Performance
Fuel Pump Relay Engine Performance; Power Distribution
Fuse/Relay Block Power Distribution
Fusible Links Power Distribution; Generators & Regulators; Starters
Generator Generators & Regulators; Engine Performance; Power Distribution
Generic Electronic Module (GEM) Body Control Modules; Electronic Suspension
Glow Plug Relay Engine Performance
Glow Plugs Engine Performance
Grounds Ground Distribution
Headlight Door Module Headlight Doors
Headlight Relay Headlight Systems; Daytime Running Lights
Headlights Headlight Systems; Daytime Running Lights
Heated Oxygen Sensor(s) (HO2S) Engine Performance
Heated Windshield Control Module Heated Windshields
Height Sensor Electronic Suspension
Horns Steering Column Switches
Horn Relay Steering Column Switches
Idle Air Control (IAC) Motor/Valve Engine Performance
Ignition Coil(s) Engine Performance
Ignition Key Lock Cylinder Anti-Theft System
Ignition Module Engine Performance
Ignition Switch Power Distribution; Engine Performance; Generators & Regulators; Starters
Illuminated Entry Module Illumination/Interior Lights
Illumination Lights Illumination/Interior Lights
Impact Sensor Air Bag Restraint System
Inertia Fuel Shutoff Switch Engine Performance
Inhibit Relay Starters
Instrument Cluster Analog Instrument Panels
Intake Air Temperature (IAT) Sensor Engine Performance
Interior Lights Illumination/Interior Lights
Interlock Switch Starters
Junction Block Power Distribution
Keyless Entry Receiver Remote Keyless Entry
Key Reminder Switch Starters
Knock Sensor Engine Performance
Lamp Control Module Exterior Lights
License Plate Lamp Exterior Lights
Lighting Control Module Lighting Control Modules; Anti-Theft System; Daytime Running Lights; Headlight Systems
Lower Relay Power Convertible Top
Malfunction Indicator Light (MIL) Engine Performance; Instrument Panels
Manifold Absolute Pressure (MAP) Sensor Engine Performance
Mass Airflow (MAF) Sensor Engine Performance
Mega Fuse Generators & Regulators
Memory Seat/Mirror Module Memory Systems
Mirror Defogger Rear Window Defogger
Moon Roof Motor Power Moon Roof
Moon Roof Relay Power Moon Roof
Multi-Function Control Module Warning Systems
Neutral Safety Switch Starters
Oil Level Switch Engine Performance
Oil Pressure Switch/Sending Unit Analog Instrument Panels; Engine Performance
Overhead Console Overhead Console
Oxygen Sensor(s) (O2S) Engine Performance
Parking Brake Switch Analog Instrument Panels
Park Lights Exterior Lights
Park/Neutral Position Switch Starters; Engine Performance; Anti-Theft System; Body Control Module
Perimeter Lighting Control Relay Exterior Lights
Power Amplifier Power Antennas
Power Antenna Module Power Antennas
Power Antenna Motor Power Antennas
Power Distribution Center Power Distribution; Generators & Regulators; Starters
Power Door Lock Motors Power Door Locks
Power Mirror Motors Power Mirrors; Memory Systems
Power Sliding Door Controller Power Sliding Side Door
Power Seat Motors Power Seats; Memory Systems
Power Steering Pressure Switch Engine Performance
Power Top Motor Power Convertible Top
Power Top Relay(s) Power Convertible Top
Powertrain Control Module Engine Performance; Analog Instrument Panels; Cruise Control Systems; Data Link Connectors; Generators & Regulators; Starters
Power Window Motors Power Windows
Power Window Relay(s) Power Windows
Radiator Fan Motor(s) Electric Cooling Fans
Radiator Fan Relay(s) Engine Performance; Electric Cooling Fans;
Rainsense Module Wiper/Washer Systems
Raise Relay Power Convertible Top
Remote Anti-Theft Personality (RAP) Module Anti-Theft System; Starters; Warning Systems
Seat Belt Pretensioners Air Bag Restraint System
Seat Belt Retractor Solenoid Passive Restraints
Seat Belt Switch Air Bag Restraint System; Passive Restraints
Shift Interlock Solenoid Shift Interlock Systems
Shift Lock Actuator Shift Interlock Systems
Side Marker Lights Exterior Lights
SIR Coil Assembly (Clockspring) Air Bag Restraint System
Slip Ring (Clockspring) Air Bag Restraint System; Steering Column Switches
SRS Control Module Air Bag Restraint System
Starter Motor Starters
Starter Interrupt Relay Starters
Starter Solenoid Starters
Starter Relay Starters
Steering Wheel Position Sensor Anti-Lock Brakes
Stoplights Exterior Lights
Stoplight Switch Engine Performance; Cruise Control Systems; Anti-Lock Brakes
Sun Roof ECU Power Sun Roof
Sun Roof Motor Power Sun Roof
Sun Roof Position Sensor Power Sun Roof
Taillights Exterior Lights
Throttle Position (TP) Sensor Engine Performance
Torque Converter Clutch Solenoid/Switch Engine Performance
Traction Control Switch Anti-Lock Brakes
Trailer Tow Connector Exterior Lights
Trailer Tow Relay Exterior Lights
Transmission/Transaxle Engine Performance
Transmission Control Module (TCM) Engine Performance; Starters
Transmission Range Sensor Starters; Back-Up Lights; Engine Performance
Transmission Range Switch Back-Up Lights; Engine Performance; Anti-Theft System
Turn Signal Flasher Exterior Lights
Turn Signal Lights Exterior Lights
Twilight Sentinel Switch Headlight Systems; Daytime Running Lights
Vapor Canister Leak Detection Pump Engine Performance
Vehicle Control Module (VCM) Engine Performance
Vehicle Dynamic Module Electronic Suspension
Vehicle Speed Control Servo Cruise Control Systems
Vehicle Speed Sensor Data Link Connectors; Analog Instrument Panels; Cruise Control Systems; Electronic Suspension
Voltage Regulator Generators & Regulators
Water-In-Fuel Sensor Engine Performance; Analog Instrument Panels
Wheel Speed Sensors Anti-Lock Brakes
Window Timer Module Power Convertible Top
Windshield Intermittent Wiper Relay Wiper/Washer Systems
Windshield Washer Motor Wiper/Washer Systems
Wiper Motor Wiper/Washer Systems

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