What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Ford Transit Mk8 2.2 TDCI Manual Transmission Wiring Harness BK3T-14D502-FED

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1679004209

Mercedes W177 Head Unit Media Player Audio Radio Controller A1679004209

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5N0959351B-1

Volkswagen Tiguan 5N Sharan 7N Impact Crash Sensor Left Right N/O/S 5N0959351B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. JPLA-15C859-AM

Range Rover Sport L494 Parking Aid Control Module ECU JPLA-15C859-AM

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9259205

BMW F10 Seat Wire Harness Loom Cable Front Right O/S 9259205

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6G92-10E887-EE

Land Rover Freelander 2 L359 GPS Navigation Sat Nav DVD Player 6G92-10E887-EE

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6960308

BMW 1 Series E88 Convertible Rear Bumper FM Radio Aerial Antenna 6960308

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2189002002

Mercedes X218 CLS350 Automatic Trunk Lid Clossing Control Module A2189002002

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9797875

BMW U06 X1 U11 High-Voltage Battery Terminal Strip Bracket Mount Support 9797875

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5NA945208G-2

VW Volkswagen Tiguan 5N Rear Tail Light Outer Right O/S Harness Loom 5NA945208G

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9287530

BMW 1 Series F20 Control Unit Air Conditioning A/C Module 9287530

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BK31-13D152-AF-2

Ford Transit Mk8 Headlight Headlamp Wiring Cable Front Right O/S BK31-13D152-AF

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. M8A2-9L468-AB

Range Rover Velar L560 Rear Subframe Wiring Harness Cable Loom M8A2-9L468-AB

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9286236

BMW F30 Door Wiring Front Passenger Door Loom Cables Harness F31 9286236

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8693213-1

BMW F30 LCI 330e B48X Engine Control Unit ECU Kit DME 8693213 FEM Key Automatic

€740.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. P1WT-19H517-AE

VW Volkswagen Amarok Mk2 Auto Brake Trailer Module Control Unit P1WT-19H517-AE

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3455306-1

2 x Mini R57 Cabrio Convertible DWA Door Alarm System Control Module Set 3455306

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0971845A-2

Audi A6 C6 Comfort Body Module Fuse Relay Box Control Unit 4F0971845A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9383681-1

Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 13275881

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. JK2T-15T850-CD

Ford Transit Custom Mk8 PDC Parking Aid Module Control Unit JK2T-15T850-CD

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06H911021

Audi A4 B8 2.0 TFSI Petrol Engine Starter Motor 06H911021

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. C1BT-14027-ACF

Ford Fiesta Mk7 Door Wiring Loom Harness Rear Left N/S C1BT14027ACF 2008887

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9325908

BMW F36 Gran Coupe Door Wiring Harness Cable Loom Front Passenger Side 9325908

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q4959395E

Skoda Superb Mk3 3V Rear Door Control Unit Module Left Right N/O/S 5Q4959395E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2219005801

Mercedes W221 Fuse Box Relay Module Driver Side A2219005801

€213.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR023539-2

Land Rover Discovery 4 L319 Front Headlight Wiring Right O/S AH22-13W029-FD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8585380

BMW X3 F25 X4 F25 30dX N57N 258HP Engine Control ECU DDE 8585380 Automatic

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8U0971035AK

Audi Q3 8U Door Loom Wiring Harness Cable Front Driver's Side 8U0971035AK

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139001909

Mercedes W213 Ambient Lighting Control Unit Module ECU A2139001909

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9296975

BMW X5 F15 Control Unit Bracket Boot Trunk Module Unit Mount Holder 9296975

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9V4T-14B321-AB

Ford Kuga Mk1 Air Module Control Unit ECU 9V4T-14B321-AB

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9075409682

Mercedes Sprinter W907 W910 Fuse Box Relay Box Fuse Box Module A9075409682

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YIK500022

Land Range Rover L322 Sat Nav Radio Display Screen Head Unit Media ECU YIK500022

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. F1FT-19G481-AH

Ford Focus Mk3 ST Keyless Entry Comfort Control Module Unit F1FT-19G481-AH

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6998485

Air Module BMW F45 X1 F48 Mini F54 F55 F56 Air Module Control Unit ECU 6998485

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2475451101

Mercedes C118 W177 C247 Fuse Box Module Cover Cap Trim Housing M282 A2475451101

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0910115K-1

Audi A4 B7 Engine Control ECU 2.0 TFSI BWE 200HP Manual 8E0910115K

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-14D618-BE

Land Rover Discovery Sport L550 Door Control Module Driver's Side FK72-14D618-BE

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5959107B

Porsche Cayenne Turbo 92a Electric Tailgate Bootlid Control Module 7P5959107B

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1779002207

Mercedes W177 Rear Left Right N/O/S Door Control Module A1779002207

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9255048

BMW 1 Series E81 E87 E87N Battery Wire Cable Negative Earth Lead 9255048 6929705

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR185962

Land Rover Rover Evoque L551 Cruise Control Unit ECU Speed Sensor R8D2-9G768-AB

€218.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. N8E2-19C164-JB

Land Rover Range Rover Velar L560 Audio Sound Control Amplifier N8E2-19C164-JB

€854.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K8919472

VW Volkswagen Scirocco Mk3 PDC Parking Sensor Control Module ECU 1K8919472

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055403742

Mercedes W205 Front Driver's Door Wiring Harness Cable A2055403742

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5TA998477

Volkswagen Tiguan 5N LED Daytime Running Light Headlight Control Unit 5TA998477

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7540992-1

Alternator Generator BMW X5 E53 E60 E61 E63 E65 N62 Petrol Engine 180A C543294A

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906018LA-1

Audi A6 C7 2.0 TDI CGLC 177HP Engine Unit ECU Kit 03L906018LA 2 Keys Ignition

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6772102

BMW X5 X6 E70 E71 Holder Bracket Actuator Unit 6772102

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009002414

Module Fuel Pump Mercedes W205 C253 Control Module Unit A0009002414

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009821012

Mercedes W166 W213 C238 Power Distribution Plate Control Unit Module A0009821012

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4M0971727S

Audi Q7 4M Fuel Tank Pump Wiring Loom Harness Cable Pump Plug 4M0971727S

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0951253

Fuel Pump Module Audi A4 B7 A6 C6 Q7 4L Sender Control Relay Unit ECU 8E0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7621168

BMW F20 F21 F30 F31 Earth Cable Battery Engine N47N N13 7621168

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2124406207

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124406207

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 93455416

Renault Trafic III Vauxhall Vivaro B Positive Battery Cable Lead Wire 93455416

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5H2Z-14B345-BA

Land Rover Discovery 3 L319 Crash Impact Sensor Air Module 5H2Z-14B345-BA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L5971693B

Porsche Cayenne 9PA Rear Door Wiring Harness Cable Left Right N/O/S 7L5971693B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9131731

BMW E81 E82 E88 E92 Driver Seat Wiring Memory Loom Harness Cable 9131731

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1649005001

Mercedes ML W164 Sam Control Module Fuse Box Unit A1649005001

€503.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4K9035225P

Audi A6 C8 A7 4K Rear Antenna Aerial Amplifier AMP 4K9035225P

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5B44D47

BMW F40 F44 F70 G20 G21 G22 Audio Sound Amplifier Module 5B44D47

€227.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G8907368

Audi A7 4G Body Convinience Module Control Unit Bracket Mount Holder 4G8907368

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6R0915181E

Audi A1 8X Battery Cable Loom Harness Wiring Negative Terminal 6R0915181E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8F0959655

Audi A5 S5 8F Air Module Control Unit ECU Crash Control Crash Data 8F0959655

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6519007103

Mercedes W907 314CDI OM651.958 Engine Control Unit ECU A6519007103 Automatic

€213.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4D0907131

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 12V 4D09907131

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6H52-10E889-AD

Land Rover Freelander 2 L359 Radio Sat Nav Display Touch Screen 6H52-10E889-AD

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1439559

BMW X5 Series E53 Battery Cable Plus Pole 1439559

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0951253

Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit 4H0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8377939

BMW X5 E39 E53 Sunroof Sliding Roof Drive Unit Motor Actuator 8377939

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6842255

BMW F39 F45 Mini F56 F60 ICM Control Unit Air Module ECU 6842255

€151.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0907115N-2

Audi TT 8J 2.0 TFSI BWA 200HP Engine Control Unit ECU Kit 8J0907115N Manual

€165.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9L34-14B006-AC

Ford Ranger Mk6 Impact Sensor Control Unit Module 9L34-14B006-AC

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9069009100

Volkswagen Crafter 35 Radio CD Player Navigation Unit Screen Display A9069009100

€232.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0971845AC

Audi A4 B7 Seat Exeo Engine Wiring Loom Plug Plastic Holder Bracket 8E0971845AC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9347822

Head Unit BMW F10 F11 F20 F30 Navigation Sat Nav High Control Module 9347822

€180.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6541592200

Mercedes X253 Engine Wiring Cable Cover Duct Bracket Channel OM654 A6541592200

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5G0035050

Volkswagen Golf R Mk7 Bluetooth CD SD Reader Sat Nav Radio Head Unit 5G0035050

€517.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1530299

Ford Focus Mk2 Alternator Generator Unit Petrol Engine 3M5T-10300-VD

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1EA907376B

Audi A3 S3 8Y Rear Suspension Damper Module Control Unit ECU 1EA907376B

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0951223

Audi A6 C7 Single Horn Alarm Siren High Tone Control Unit Module 4H0951223

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1695420018-PLS

Mercedes W169 Front Bumper Parking Distance Sensor Parktronic Polar Silver 761

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7644251

Mini Cooper One R55 R56 R57 R60 Battery Mounting Bracket Clamp Bolt Holder

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8654977

BMW X5 F15 N20 Petrol Sensor System Engine Wiring Harness Cable Loom 8654977

€175.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. ML34-13C148-AE

VW Volkswagen Amarok NF Front Lamp Headlight Control Unit Module ML3413C148AE

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6843898

BMW F20 F21 F22 F30 F31 F32 Body Control Module Unit FEM ECU LR01 6843898

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06L907309E

Audi A4 B9 2.0 TFSI DLVA 190HP Engine Control Unit ECU 06L907309E Automatic

€99.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BK3T-18D815-BE-1

Ford Transit Mk8 PhoneRadio Panel Media Head Unit Control Panel BK3T-18D815-BE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8573260-7

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 Key FEM Lock Manual

€441.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CK52-14633-AE

Range Rover L405 Door Wiring Loom Harness Cable Rear Left N/S CK52-14633-AE

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6856980

BMW F01 F10 F11 F30 F31 AHK Towing Hitch Tow Bar Control Module Unit ECU 6856980

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8576333-1

BMW F10 F11 520d X3 F25 20dX N47N 184HP ECU Kit DDE 8576333 Key CAS4 Automatic

€218.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H22-14301-EA

Land Rover Discovery 3 L319 Negative Battery Cable Wiring Loom 4H22-14301-EA

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 99761843601

Porsche 911 Cayman 987 Cooling Air Control Unit Fan Control Module 99761843601

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 382327

Ultrasonic Module Mini Countryman Paceman R60 R61 Alarm System Sensor 0382327

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7E0971794A-1

Volkswagen Transporter T5 Positive Battery Cable Wire 2.0 TDi CAAA 7E0971794A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9068204126

Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9068204126

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1421295

Mini EGS Control Unit Module ECU Programmed 5 Pins 1421295

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

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