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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Volkswagen Touareg Audi Q7 Water Cooled Alternator 190A 059903015P

€80.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8507893

BMW 1 2 3 Series F20 F21 F22 F30 F31 N47N Wiring Loom Harness Engine 8507893

€47.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9115449

BMW X5 X6 E70 E71 Power Junction Box Positive Battery Cable Plus Pole 9115449

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9251727

BMW 1 Series F20 F21 Front Bumper PDC Loom Cables Wiring 9251727

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7848469

BMW F80 M3 F82 F83 M4 Wiring Harness Engine Gearbox Module 7848469

€94.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129004008

Mercedes C207 Stereo Radio CD Player Head Unit A2129004008

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8507880

BMW 1 3 Series F20 F21 F30 F31 N47N Wiring Loom Harness Engine Gearbox Module

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0959663F

Audi A6 C7 Voltage Converter Stabilizer Control Module Unit ECU 8K0959663F

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009055700

Mercedes W639 Brake Yaw Rate Sensor ECU A0009055700

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W0907428C

Audi A4 B9 Camera Control Module Unit ECU 8W0907428C

€332.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7599881-2

BMW E87 LCI E90 118i 318i N43 143HP ECU KIT DME 7599881 CAS3 + Key Automatic

€227.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9294206

BMW F25 CD DVD Navigation Sat Nav Head Unit 9294206

€89.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5H2Z-14A686-BA

Land Rover Discovery 3 L319 Crash Impact Sensor Left Right N/O/S 5H2Z-14A686-BA

€23.95

Free delivery: Sep 14 – 15

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Part no. 9156654

BMW 3 Series E93 Rear Antenna Aerial Amplifier AM/FM 9156654

€23.95

Free delivery: Sep 14 – 15

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Part no. 7L0864643B

Battery Cover Audi Q7 4L VW Touareg 7P Porsche Cayenne 9PA Top Cap 7L0864643B

€23.95

Free delivery: Sep 14 – 15

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Part no. 6917557

BMW Z4 Z3 E36 E85 Module Radar Burglar Alarm Sensor 6917557 6963225

€23.95

Free delivery: Sep 14 – 15

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Part no. 6940623

BMW 1 3 Series E81 E82 E84 E87 E90 E91 PDC Parking Ultrasonic Sensor Quartz Blue

€23.95

Free delivery: Sep 14 – 15

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Part no. 9230944

Control Unit BMW F01 F02 F07 F10 F11 CAS4 Key Reading Module 9230944

€79.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6396890279

Mercedes Viano Vito W639 Radio Fan Adapter Control Unit Module A6396890279

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0025422619-3

Relay Mercedes W203 W204 W212 W639 W906 4-Pin Grey Hella 12V A0025422619

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6931507

BMW E60 E61 E63 E87 E90 E91 F10 Diagnosis Interface Most 6931507

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9244144

BMW E82 E88 E92 E93 LCI Accelerating Sensor 9244144

€51.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1635400534

Mercedes-Benz M ML W163 Front Left Right Door Wiring Loom Harness A1635400534

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8W2035043E

Audi A4 B9 MMI Multimedia Sat Nav Navigation Control Head Unit 8W2035043E

€474.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9270354

Mini F54 F55 F56 F57 F60 Rear Electric Power Distribution Fuse Box 9270354

€23.95

Free delivery: Sep 14 – 15

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Part no. 6970908

BMW E65 E66 Sensor Front Right Door Airbag O/S 6970908

€23.95

Free delivery: Sep 14 – 15

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Part no. 5N0971228D

Volkswagen Tiguan 5N Battery Lead Positive Cable Plus Pole Wiring 5N0971228D

€23.95

Free delivery: Sep 14 – 15

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Part no. A2129009505

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129009505

€23.95

Free delivery: Sep 14 – 15

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Part no. 4H0907658B

Audi A3 8V A5 A6 A7 Air Quality Sensor Unit 4H0907658B

€23.95

Free delivery: Sep 14 – 15

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Part no. 6902285

BMW E39 E87 E90 E91 Trigger Contact PDC Sensor Tweeter Gong 6902285

€23.95

Free delivery: Sep 14 – 15

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Part no. 9298936

BMW F20 F21 F22 F30 F31 Alpine CD Champ 2 Radio Player Head Unit 9298936

€56.95

Free delivery: Sep 14 – 15

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Part no. 8512499

Engine Control Unit BMW E81 E87 E90 E91 LCI N47 Diesel ECU DDE 8512499

€42.95

Free delivery: Sep 14 – 15

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Part no. 06L971627A

Audi S1 8X S3 8V VW Golf R Mk7 2.0 TFSI Fuel Injectors Wiring Harness 06L971627A

€23.95

Free delivery: Sep 14 – 15

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Part no. 6832696

Mini F55 F56 F57 IBS Negative Battery Lead Cable Wiring 6832696

€23.95

Free delivery: Sep 14 – 15

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Part no. 8E0907637

Audi A4 B7 YAW Sensor ESP Rotation Rate Acceleration Control Unit 8E0907637

€32.95

Free delivery: Sep 14 – 15

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Part no. A2129009128

Door Module Mercedes W207 W212 CLS W218 Front Left N/S Control Unit A2129009128

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8V0857273P

Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P

€47.95

Free delivery: Sep 14 – 15

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Part no. 8K0937517A

Audi A4 B8 A5 8T Battery Postive Terminal Distribution Power Board 8K0937517A

€23.95

Free delivery: Sep 14 – 15

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Part no. A2049009410

Mercedes W204 CD Player Radio Stereo Navigation Sat Nav Head Unit A2049009410

€23.95

Free delivery: Sep 14 – 15

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Part no. A2048705490

Mercedes-Benz C W204 Digital Audio DAB Receiver Control Unit Module A2048705490

€37.95

Free delivery: Sep 14 – 15

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Part no. 6850374

BMW 1 3 Series E81 E87 E88 E90 E91 E92 Accelerator Speed Sensor 6850374 6778421

€23.95

Free delivery: Sep 14 – 15

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Part no. 8647841

BMW F45 X1 F48 Mini F55 F56 F57 Integrated Supply Module Z11 8647841

€23.95

Free delivery: Sep 14 – 15

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Part no. 9364669

BMW F10 F11 LCI Active Sound Unit Control Module Design Amplifier 9337754

€61.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2079014300

Mercedes-Benz E-Class A207 W207 Convertible Air Module System Control Unit

€99.95

Free delivery: Sep 14 – 15

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Part no. A1695451940-1

Fuse Box Mercedes W169 W245 Electrical Relay Control Module Unit A1695451740

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7P090755AF

Porsche Cayenne 92A VW Touareg 7P Air Suspension Module Control Unit 7P0907553AF

€113.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6819329

KaFAS Camera BMW i3 I01 F10 F20 F30 LCI Speed Control ECU Module Unit 6819329

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 3450646

Mini Cooper Convertible R57 Fuse Box Electrical Control Unit 3450646

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6C1T14A481CC

Ford Transit Mk7 Fuse Box Body Control Module ECU 6C1T14A481CC

€70.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A6397602004

Bowden Cable Mercedes W639 Rear Right O/S Sliding Door Handle Catch A6397602004

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8571038

BMW 1 F20 F21 LCI Mini D F56 B37 Wiring Harness Engine Glow Plug Module 8571038

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0045467640

Distributor Box Mercedes W204 W207 W221 Connector Block Control Unit A0045467640

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6R0971537N

Seat Ibiza 6J Battery Ground Line Earth Negative Cable Wiring 6R0971537N

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9244429

BMW X6 Series E71 Rear Bumper PDC Cables Wiring Loom Set 9244429

€56.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. RVH000046

Land Rover Discovery 3 L319 Air Suspension Valve Control RVH000046

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0009820912

Mercedes W176 W222 W246 Voltage Converter Power Distributor Fuse A0009820912

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6807634

BMW X5 F15 F20 F30 SRS Air Module Bag Control Unit Module ECU 6807634

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 6990109

BMW X3 E83 LCI Front Door Speaker Tweeter 6990109

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2129000406

Fuel Pump Module Mercedes W207 C207 A207 Control Unit ECU A2129000406

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A0035420219

Relay Mercedes W639 W906 5-Pin Black 12A A0035420219

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9176193

Mini Cooper R57 R58 LCI Radio Aerial Antenna Amplifier FM 9176193

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9247398

BMW F01 F10 F11 F12 Body Control Unit Module Gateway ZGW-01 9247398

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4H0959793AC

Porsche Macan S 95B-2 Front Door Control Module Unit Driver's Side 4H0959793AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0959792J

Audi A4 B8 Door Module Front Left N/S Control Unit Module ECU 8K0959792J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7631558

Engine Starter BMW F20 M135i F30 335i F32 435i F80 M3 F82 M4 Motor Start 7631558

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8P0959655J

Audi A3 E 104 T Air Module ECU Sensor Control Unit 8P0959655J

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AH2211001AC

Land Rover Range Rover Sport L320 3.0 Diesel Engine Starter Motor AH2211001AC

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9162930-WB

BMW E81 E82 E87 E90 E91 Parking Sensor PDC Ultrasonic Bluewater - 896

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8P0035399B

Audi A3 8P Speaker Tweeter Front Left Right N/O/S Pillar A 8P0035399B

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. HC345H297AA

Ford Transit Mk8 2.0 EcoBlue AdBlue Module Control Unit HC34-5H297-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9389070

BMW F20 F30 LCI REM Electric Power Distribution Fuse Box Control 9389070

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0907063C

Audi S5 8T Body Comfort Control BCM Supply Module Unit ECU 8K0907063C

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2038206526

Mercedes-Benz C-Class W203 Door Control Module Unit Rear Left N/S A2038206526

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 03L911021C

Audi A4 B8 2.0 TDI CAGA Diesel Engine Starter Motor Bosch Unit 03L911021C

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. AM5T-14D212-ED

Ford B-Max Fiesta Mk7 Bluetooth Module Control Unit AM5T-14D212-ED

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9290621

BMW F33 F83 M4 Convertible Top Phone Antenna Aerial Module CTM Unit 9290621

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5E0971095CN

Skoda Octavia 3 5E Front Bumper Wiring Harness Loom 5E0971095CN

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7631587

BMW 1 3 X5 Series E53 E81 E87 E90 LCI Battery Mounting Bracket Clamp Bolt Holder

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2229009910

Mercedes W205 W213 C238 Seat Heating Heater Module Control Unit ECU A2229009910

€66.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 5Q0919294F

Seat Leon Mk3 VW Golf 7 PDC Parking Distance Control Module Unit ECU 5Q0919294F

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8K0959655B

Audi S5 8T Air Module Control Unit SRS System ECU 8K0959655B

€123.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9274428-1

Parking Sensor Mini Cooper F54 F55 F56 F57 F60 PDC Ultrasonic Black 9274428 SET

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9134669

BMW E93 Convertible Seat Control Unit Module ECU 9134669 FSV 7.10.0

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4E0910563C

Audi S8 D3 Digital Radio DAB Tuner Receiver Module Kenwood 4E0035583C

€42.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9065460121

Mercedes W906 Battery Cable Negative Lead Wiring Harness A9065460121

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9133085

BMW X5 Z4 Series E89 E70 Mini Cooper R56 R57 CD Changer Multichanger 9133085

€28.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A2045409533

Mercedes W204 Door Wiring Front Right O/S Door Cable Harness A2045409533

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7394651

BMW 5 F11 Touring Rear Boot Trunk Lid Tailgate Control Unit Module ECU 7333928

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 4F0907468M

Audi A6 C6 Diagnostic Interface Gateway Module ECU Control Unit 4F0907468M

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A1669004002

Door Module Mercedes C117 W176 W246 Front Left N/S Control Unit A1669004002

€32.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9160189

BMW 1 Series E87 LCI ECU Body Control Module H2 ECU 9160189

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9366920

Mini F55 F56 PDC Parking Distance Sensor Module Control Unit ECU 9366920

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 8736083

BMW F98 Battery Lead Pole Negative Cable IBS Sensor 8736083

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 9293242

BMW 3 7 Series F01 F02 LCI F34 Telematics Control Unit Module TCB ECE 9293242

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. BU5T-14B192-AA

Ford Focus Mk3 Relay Module 4-Pin Black BU5T-14B192-AA

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7638194

BMW F20 F21 F22 F30 F31 Engine Starter Motor N20 N26 N55 Petrol 7638194

€23.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. A9079000806

Mercedes Sprinter W907 W910 Front SAM Body Control Module Unit ECU A9079000806

€189.95

Free delivery: Sep 14 – 15

If paid before 14:00

Part no. 7233914

BMW E90 E91 Central Locking Lock Immobilizer Control Unit Module ECU 7233914

€37.95

Free delivery: Sep 14 – 15

If paid before 14:00

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