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 W447 Headlight Turn Indicator Light Socket Plug A4478260000

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9110878

BMW E81 E87 E91 Switch Cluster Steering Column Cruise Control 9110878

€180.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2K7858247

VW Volkswagen Caddy SB Dashboard End Cover Cap Trim Left N/S Black 2K7858247

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 443937105B

VW Volkswagen Audi Skoda Seat Little Fuse Amp 30A 12V 443937105A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T2035195C

Audi A4 B8 Radio Player Symphony Head Unit CD Player Stereo 8T2035195C

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M0941828H

Audi Q7 4M Fuse Box Battery Terminal Cover Housing 4M0941828H

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3427749

BMW X3 E83 Cable Loom Door Passenger Side Wiring Harness 3412570

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9294300

Dashboard Monitor BMW X3 F25 X4 F26 Onboard Central Display Screen 8,8" 9294300

€151.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059007539

Fuse Box Mercedes S205 Interior Front Relay Fuse Box Sam Module A2059007539

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5WA962133E

Volkswagen Golf 5G Keyless Entry Module Aerial Antenna 5WA962133E

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02E911023S

Audi TT 8J 2.0 TFSI CESA Petrol Engine Starter Motor 02E911023S

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3Q0941329

Volkswagen Skoda Seat Audi Diesel Engine Adblue Module Control Unit 3Q0941329

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CK52-971111-BC

Range Rover L405 Alarm Horn Siren Wiring Harness Cable CK52-971111-BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8574095

BMW F20 F21 F30 F31 116d 316d 118d 318d Diesel N47N Engine ECU 8574095 Manual

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8638551

BMW F20 F21 F22 F30 F32 LCI Integrated Supply Module Unit 8638551

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9306090

BMW X5 F15 Rear Parking Sensor PDC Wiring Loom Wiring Harness 9306090

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1440105280

Citroen Jumpy MK2 Peugeot Expert 1.6 HDI Alternator Wiring Loom 1440105280

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906022RM-2

Audi A4 B8 A5 8T 2.0 TDI Quattro CAHA 170HP Engine ECU Kit 03L906022RM Manual

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1695450003

Mercedes W169 Fuse Box Cover Trim Panel A1695450003

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0971029E

Audi A4 B8 Door Wiring Harness Loom Cable Front Driver's Side 8K0971029E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6R0915181E

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

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K9971694R

VW Volkswagen Golf 1K Door Wiring Loom Harness Cable Rear Right O/S 1K9971694R

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6906621

BMW E87 E90 E91 E92 E93 Power Distribution Fuse Box Front 6906621

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129061803-2

Mercedes S212 Rear Tail Light Lamp Outer Wiring Harness Right O/S A2129061803

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2229001708

Mercedes W205 Door Control Module Front Left N/S A2229001708

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR121192

Range Rover Sport L494 Engine Starter Motor 3.0 Diesel KPLA-11001-BC

€108.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YQE500350

Range Rover Sport L320 Discovery 3 Interior Fuse Box BCU YQE500350

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03C906027DA

VW Touran 1T 1.4 TSI CAVC 140 HP Engine Module Unit ECU 03C906027DA Automatic

€146.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6395400431

Mercedes Vito W639 Earth Cable Battery Terminal Wiring A6395400431

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H9971693L

VW GOLF GTI CD1 Door Wiring Loom Harness Wire Rear Left N/S 5H9971693L

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E0907637B

Audi A6 C6 Yaw Module Rotation Rate Acceleration Sensor 8E0907637B

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8509722

BMW 1 Series F20 F21 F22 F30 F31 F35 Control Unit Box Engine 8509722

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F2910115F-1

Audi A6 C6 2.0 TFSI BPJ 170HP Engine ECU Kit 4F2910115B Ignition + Key Manual

€189.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5H4971161BG

VW Volkswagen Golf Gti Cd1 Door Wiring Loom Harness Front Left N/S 5H4971161BG

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8577764-1

BMW F10 F11 520d Diesel N47N 184HP ECU Kit DDE 8577764 + Key + CAS4 Automatic

€379.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0971095CA

Audi Q7 Front Bumper Wiring Loom Harness 4L0971095CA

€70.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8489649-1

Mini Cooper F60 B38A15A 1.5 136HP ALL4 Engine ECU Kit DME 8489649 BDC Lock + Key

€526.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9176882

BMW E87 LCI Body Control Module Junction Box Electronics H2 9176882

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W0971348

Audi A4 B9 Gearbox Cable Wiring Loom Harness Manual Front Wheel Drive 8W0971348

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9372556

BMW G11 Door Wiring Harness Rear Left Right Door N/O/S Wiring Loom 9372556

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1638900144

Mercedes W163 Spare Wheel Carrier Fixing Plate Bracket Left N/S A1638900144

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7300267-2

BMW F01 F02 LCI Rear Tail Light Inner Wiring Harness Cable Plug Left N/S 7300267

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6700003722

Smart A453 Power Steering Rack Control Unit Module 6700003722

€99.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1769069200-2

Mercedes W176 Front Right O/S Headlamp Light LED Wiring Cable A1769069200

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8378113

BMW Z4 Series E85 E86 Interior Fuse Box 8378113

€26.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2469009802

Mercedes W176 Radio Control Function Button Knob Controller Unit A2469009802

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8K0907063DG

Audi Q5 8R Body Control Comfort Unit Module Unit 8K0907063DG

€51.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6904165

BMW X5 E53 Front Dashboard Centre Console Lighter Wiring Loom Harness 6904165

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7LA971794A

Volkswagen Transporter T6 Starter Motor Wiring Harness Cable Earth 7LA971794A

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5QS919298

Audi A3 S3 8Y VW Caddy SB Mk4 Parking Sensor Module Control Unit 5QS919298

€161.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2035451303

Mercedes CL203 W203 Fuse Box Cover Engine Bay Relay A2035451303

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9139895

BMW F20 F21 F30 F31 Mini F56 Navigation Head Unit Basic Media Player 9139895

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8378753

BMW 3 5 7 X5 Series E38 E39 E46 E53 E65 Reception Antenna RDC 433MHZ 8378753

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0959595E

Audi A3 8V Door Control Module Unit ECU Rear Left Right N/O/S 5Q0959595E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9313933

BMW F13 Footwell Light Module Control Unit ECU FRM3 9313933

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BJ32-14B192-CA

Range Rover Evoque L538 Brown Relay 40 AMP BJ32-14B192-CA V23134-B152-X514

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 02Z911024Q

Audi A3 8V 2.0 TDI Quattro Starter Motor Engine Diesel Bosch 02Z911024Q

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8570659

Wiring BMW X3 F25 N47N Engine Automatic Gearbox Module Wiring Harness 8570659

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9284282

BMW F10 Body Control Module ECU Junction Box PL6 JBBFE III V2 9284282

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906018LB

Audi A6 C7 2.0 TDI CGLC 177HP Engine Control Unit ECU 03L906018LA Automatic

€75.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DPLA-70718-NZ

Land Rover Discovery Sport L550 Telematics Control Module Unit DPLA-70718-NZ

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1648207726

Door Module Mercedes ML W164 Front Left N/S Control Unit Module A1648207726

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055406921

Battery Wiring Mercedes X253 Diesel OM651 Alternator Harness Cable A2055406921

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7550967

BMW E81 E90 E91 E60 Petrol Alternator Generator 150A 7550967

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CH22-19C166-AB

Land Rover Discovery 4 L319 Dual USB Socket Connection Port CH22-19C166-AB

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8W8959107E

Audi A5 F5 Rear Hatch Tailgate Boot Lid Control Module Unit ECU 8W8959107E

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 99761822101

Porsche 911 Cayman 987 Boxster Crash Impact Sensor Left Right N/O/S 99761822101

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4M4915233AE

Audi A6 C8 Boot Battery Monitoring Control Module Unit 4M4915233AE

€142.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2139005220

Mercedes W213 SAM Module Rear Body Comfort Control Unit ECU A2139005220

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9270035

Antenna Aerial Amplifier Mini F55 F56 F60 Rear AM/FM DAB 9270035

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 390203254

Seat Adjustment Motor Mercedes R171 W221 Front Seat Motor Actuator 0390203254

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L6971121J

Volkswagen Touareg 7L Front Door Wiring Loom Harness Passenger's Side 7L6971121J

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E0907637

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

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059008218

Telematics Module Mercedes W176 W205 W218 Communication Control Unit A2059008218

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9281717

BMW X5 F15 Camera Kafas Front Windscreen Camera 9281717

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5907441B

Porsche Cayenne 92A Rear View Camera System Control Module ECU 7P5907441B

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1179001801

Mercedes W176 Air Module System Control Unit Module ECU A1179001801

€85.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. FK72-19C299-AA

Land Rover Evoque L538 Sat Nav Radio Display Screen 8 Inch FK72-19C299-AA

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F1971036F

Audi A6 C6 Front Passenger Door Wiring Left N/S Harness Loom Cable 4F1971036E

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6977398

BMW 5 6 Series E60 E61 E63 R55 R56 Sensor B-pillar Airbag 65776977398 6977398

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9339829

BMW G01 G30 Battery Jump Start Terminal Power Distribution Unit 600W 9339829

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6801326

BMW F15 Door Wiring Harness Loom Cable Front Left N/S 6801453

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9163173

BMW E60 E61 LCi Right Left Rear Door Wiring Loom N/O/S 9120797

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8E0941029BC-2

Audi RS4 B7 Headlight Lamp Light Left N/S Harness Wire Loom 8E0941029BC

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8X0959673

Audi A1 8X Windscreen Heating Control Switch 8X0959673

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9355560

BMW G30 G31 G11 G12 Hybrid Negative Battery Cable Lead Wiring 9355560

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5B32191

BMW X2 U10 X1 U11 Front Door Wiring Loom Harness Cable Left N/S 5B32191

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9665162580

Peugeot Partner Citroen Berlingo 1.6 HDI Engine Wiring Cable Bracket 9665162580

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. L8B2-10C784-BB

Range Rover Evoque L551 High Voltage Hybrid Battery Lithium-Ion L8B2-10C784-BB

€332.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P5035481D-2

Porsche Cayenne 92A Sound Audio Amplifier Bose AMP 7P5035481D

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0955557

Volkswagen VW Polo 6R 5 Audi A6 C7 Air Module Crash Impact Sensor 4H0955557

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9355549

BMW F20 F22 F21 F30 F32 LCI ECU USB Hub Module 9355549

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2038202185

Mercedes W203 Door Control Module Rear Left N/S A2038202185

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1635400182

Mercedes-Benz ML-Class W163 Fuse Box Lid Cover Box Trim A1635400182

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2055401542

Mercedes W205 Rear Door Harness Wiring Cable Left Right N/O/S A2055401542

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6839821

Battery Cable BMW G01 G02 F97 F98 Positive Plus Pole Lead L= 712MM 6839821

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5QS907338B

Audi A3 S3 8Y Headlight Head Light Lamp Range Control Unit Module ECU 5QS907338B

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0909131

Audi A8L 4H Ignition Keyless Entry Reader Coil Module 4H0909131

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1775355

Ford Focus Mk3 Negative Earth Cable Lead Loom Harness CV6T-14324-UAB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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