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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Mercedes Vito W639 Door Front Right O/S Control Unit Module ECU A6398201226

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9142405

Mini Cooper One R56 Front Left Door Wiring Harness N/S 9142405

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0915181

Audi A4 RS4 B8 Battery Terminal Negative Cable Loom Harness Wiring 8T0915181

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8H0959655E

Audi A4 S4 B7 Cabrio Air Module Control Unit ECU Impact Sensor 8H0959655E

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9261110

BMW F20 F21 F30 F31 Fuse Box Power Distribution Control Unit Box Rear 9261110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7835131

BMW E60 E61 LCI M5 E63 M6 Fuel Injection System Adapter Lead 7835131

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9217912

BMW E82 E90 LCI Trunk Shelf Left Right Speaker Tweeter Harman Kardon 9217912

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2038202185

Mercedes W203 Door Control Module Rear Left N/S A2038202185

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4479009808

Mercedes Vito W447 Fuse Box Relay Control Unit Electric Module SAM 4479009808

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6857262

Air Module BMW F01 F02 LCI F10 F11 F13 ICM SRS Control Unit ECU Bosch 6857262

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9150883

BMW 3 E93 Convertible Boot Trunk Lid Tailgate Wiring Loom Harness Cables 9150883

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1742690

BMW E60 E63 E87 E90 Relay Changer Make Contact Salmon Red 1742690

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0065422618

ESP Sensor Mercedes W166 Electronic Yaw Rate Sensor Module A0065422618

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6461502734-1

Mercedes W204 C220 CDI 170HP 646.811 Engine Unit ECU A6461502734 Automatic

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9229880

BMW E88 Cabrio ECU Body Control Module H3 Junction Box 9229880

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907357A

Audi A7 4G8 Headlight Head Light Lamp Range Control Unit Module ECU 4H0907357A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A04A04

Mini F54 F55 F56 F60 Telematics Module Bluetooth Control Unit ECU 5A04A04

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7627023

BMW F20 F21 F30 Petrol N13 Automatic Gearbox Engine Sensor Module 1 Wiring

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6820526

Head Unit BMW F20 F21 Radio Media GPS Sat Navigation Unit 6820526

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2219009903

Mercedes-Benz S-Class W221 Rear Door N/O/S Control Unit Module A2219009903

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959655N

Audi A3 8V Air Module Control Sensor SRS System ECU Unit 5Q0959655N

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6956744-2

BMW E81 E82 E87 E88 E90 E91 Ultrasonic Sensor SET X4 PDC Sydney Blue 6956744

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125400035

Earth Ground Cable Mercedes W204 W207 W212 Battery Starter Wiring A2125400035

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7810860

BMW E90 E91 E92 LCI N47N Engine Alternator Starter Cable B 7810860

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573116

BMW 5 Series F10 F11 LCI B47 Cable Alternator Starter 8573116

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6N-15K607-AH

Ford Focus Mk3 Motion Alarm Sensor Module Unit AV6N-15K607-AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5J0035411C

Skoda Fabia 5J Front Door Bass Loudspeaker Left Right N/O/S 5J0035411C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04E971612ES

Seat Ibiza 6J Engine Wiring Harness Loom Manual Gearbox 1.2 TSI CJZC 04E971612ES

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2389053301

Tailgate Trunk Mercedes X117 X156 W205 Boot Rear Control Module Unit A2389053301

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8513242

BMW F10 F11 520d Diesel N47N 184HP Engine ECU DDE 8513242 Automatic

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8519663-10

Mini Cooper SD R55 R56 LCI R60 N47N 143HP Diesel Engine ECU DDE 8519663 Manual

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9247386

BMW X3 F25 Body Control Module ECU Junction Box JBBFE III V9 Lear 9247386

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779061002

Fuse Box Mercedes W177 Power Distribution Junction Relay Unit A1779061002

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9347878

Dashboard Monitor BMW X5 F15 Onboard Central Display Screen 10,25" 9347878

€246.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7805349-1

BMW X3 Series E83 LCI M47N2 2.0d 150HP ECU Kit DDE + EWS4 + Key 7805349 Manual

€313.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9367376

Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9367376

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7476046

BMW F20 F21 F30 F31 Mini F55 F56 F57 Fuel Pump Module Control Unit ECU 7476046

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0035186AA

VW Volkswagen Golf Mk5 Radio Control Head Unit CD Player 1K0035186AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8519668

BMW E90 E91 LCI 320d N47N 184HP Engine Control Unit ECU DDE 8519668 Manual

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6906914

BMW X5 E53 Battery Cable Negative Wire 6919976

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6836883

PDC Module BMW X3 F25 X5 F15 Mini F55 F56 Parking Distance Control Unit 6836883

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9374507

BMW F23 REM Rear Electronic Module Fuse Box Control Unit V2 9374507

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9162986

BMW E81 E87 E87N E90 LCI E91 E92 Air Conditioning Control 9162986

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BH42-14D620-AA

Land Rover 4 L319 Rear Door Control Unit Module Left Right N/O/S BH42-14D620-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9232896

Dashboard Monitor BMW X5 X6 E70 E71 Onboard Display Screen 8,8" 9232896

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2354693-4

BMW 3 5 X3 Series 4 E46 E60 E65 E83 M54 Petrol Starter Motor 2354693

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9139868-1

BMW X3 E83 LCI X5 E70 LCI PDC Parking Ultrasonic Sensor Black 9139868

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7801203

BMW X5 E70 E87 F10 F11 F15 F25 F30 Diesel Engine Starter Motor 7801203

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9224589

BMW 1 Series E82 Footwell Light Module Control Unit ECU BASIS PL2 FRM3R 9224589

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469012504

Mercedes W176 W246 Rain Sensor Light Control Unit Front Windscreen A2469012504

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6818814

Airbag Module Mini F55 F56 F60 BMW X1 F48 F45 ECU Control Unit Air Bag 6818814

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715450032

Mercedes SLK R171 PDC Parking Distance Control Unit Module Sensor A1715450032

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0959593D

Audi TT FV A3 8V Door Module Control Unit Front Right O/S Side ECU 5Q0959593D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6838609

Antenna Amplifier BMW F40 Aeral Diversity Control Unit FM DAB Live Dash 6838609

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8385164-2

BMW 7 Series 2 E65 E66 Battery B Engine Compartment Terminal Point 8385164

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F1971035N

Audi A6 C6 Front Driver Side Door Wiring Harness Loom Cable 4F1971035L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9279823

BMW F30 REM Rear Electronic Module Fuse Box Control 9279823

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8482940

BMW F30 LCI G11 G30 Battery Cell Supervision Circuit Module Unit 8667593

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959663B

Audi A5 8T Voltage Converter Stabilizer Control Module Unit ECU 8K0959663B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007500

Mercedes W212 E220CDI OM651.924 Engine Unit Module ECU A6519007500 Automatic

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 10723AF

Ford Transit Connect Battery Box Tray Housing Holder Bracket 10723AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V0971104

Audi A3 S3 8V Sportback Wiring Harness PDC Parking Sensor Rear Bumper 8V0971104

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A9067600404

Bowden Cable Mercedes W906 Rear Sliding Door Opener Cable Wire A9067600404

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2650917

Ford Transit Connect Engine Alternator Generator Unit Diesel KK3T-10300-BB

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6868253

BMW F20 F21 F30 F31 ECU ICM Control Unit Air Module ECU 6868253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9194824

BMW Z4 E89 Convertible Roadster Air Module ECU Control Unit 9194824

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6910542

BMW 3 X3 Series E46 E83 Battery Cable Plus Pole Power Positive 6910542

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669004302

Mercedes W176 W246 Front Door Module Control Unit Module Right O/S A1669004302

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BV6T-14B526-BB

Ford Focus Mk3 Voltage Stabilisation Control Module Bosch ECU BV6T-14B526-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7M0951253C-2

VW Touareg 7L Audi Q7 4L Relay Black Control Unit 5 Pin 404 12V Set 7M0951253C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725407805

PDC Wiring Mercedes R172 Parktronic Parking Sensor Cable Rear A1725407805

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6840399

Head Unit BMW F20 F21 F22 F30 F31 Radio CD Navigation Business GPS 6840399

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-18K811-PA

Ford Fiesta Mk7 Dashboard Head Unit Media Player Control Panel C1BT-18K811-PA

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9207913-1

BMW F20 F21 F22 F30 F31 F32 F33 F36 Fan Motor Relay 9207913

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9137800

Mini Cooper One R55 R56 R57 Passenger's Door Harness Wiring Cables N/S 9137800

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9177983

BMW E87 LCI Body Control Module Junction Box H2 9177983

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2539000100

Rain Light Sensor Mercedes X253 Windschield Sensor Module Unit A2539000100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3448250

BMW X3 E83 Front Door Window Lifter Regulator Motor Right O/S 3448250

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9244422

BMW X5 E70 LCI Front Bumper PDC Loom Cables Wiring Set 9244422

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009003310

Mercedes W205 W213 Fuel Pump Module Control Unit ECU A0009003310

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6976156

BMW E60 E61 E63 Passenger Side Door Air Control Module 6976156

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698201585

Mercedes W245 ECU Control Unit Sensor Air Module A1698201585

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7524109

BMW Z4 E85 Petrol M54 Wiring Loom Harness Engine Gearbox Manual 7524109

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9315096

BMW X3 F25 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9315096

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645403132

Mercedes-Benz M-Class ML W164 Wiring Loom Cable Harness Fuel Tank A1645403132

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7938196

PDC Module BMW F45 X3 F25 Mini F55 F56 Parking Distance Sensor Unit 7938196

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9276009

BMW F07 GT Rear Antenna Aerial Amplifier AM/FM DABIII FBD2 868MHZ 9237057

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9212916

BMW 5 7 X5 E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor 9212916

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0919887M

Sat Nav Audi S8 D3 A6 C6 DVD Drive Navigation Control Unit 4E0919887M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7615305

Engine Wiring BMW F20 F21 F30 F31 N13 Loom Module Harness Cable 7615305

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8959792A

AUDI A7 4G8 Door Control Module Front Right O/S Passenger Side 4G8959792A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9197161

BMW 1 Series E82 ECU Footwell Light Module Control Unit PL2 FRMFA 9197161

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7527610-3

Mini Cooper R50 W10 90HP Engine ECU Kit DME 7527610 + EWS + Key Automatic

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6917544

Mini Cooper R50 R53 Rear PDC Ultrasonic Parking Sensor Pepper White - 850

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055404106

Brake Harness Mercedes W205 Rear Left Brake Pad Wear Wire Wiring A2055404106

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6953424-2

BMW Z4 Series 2 E85 E86 Positive Battery Cable Plus Pole Lead 6953424

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9390396

Audio Amplifier BMW F20 F21 F22 Harman Kardon Active Sound Design Unit 9390396

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9183233

BMW E60 E61 LCI Centre Console Switch Cluster Control Unit ECU Module 9183233

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2711501920

Engine Wiring Mercedes W204 C207 W212 M271 Harness Loom Cable A2711501920

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

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