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 C118 W177 W247 Battery Box Tray Trim Housing Cover A2475411000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645402372

Mercedes W164 W251 Fuse Relay Module Rear Fuse Box Unit A1645402372

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139005528

Mercedes W205 W213 Ignition Central Lock Control Unit Module ECU A2139005528

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6071500133

Engine Wiring Mercedes W176 W246 Diesel OM607 Loom Harness Cable A6071500133

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2195450732

Mercedes CLS W219 Parking Sensor PDC Distance Control Unit Module A2195450732

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6941416

BMW 5 6 Series E60 E61 E63 E64 6-disc Compact CD Changer 6941416

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9127895

BMW E88 Convertible Antenna Aerial DAB Rear Trunk Tailgate 9127895

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045450003

Mercedes W204 Fuse Box Battery Starter Cable Cap Cover Top Lid A2045450003

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9253111-1

BMW 1 2 Series F20 F21 F22 Positive Plus Pole Battery Blow Cable Part 9253111

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8604258

Mini Cooper R56 Positive Battery Cable Alternator Lead 8604258

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7574294

Mini Cooper S R56 Automatic Gearbox TCU ECU Control Unit EGS Module 7574294

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7627021

BMW 1 3 Series F20 F21 F30 Petrol N13 Harness Engine Sensors Module 1 7627021

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14C249-AB

Range Rover Evoque L538 Seat Control Module Unit ECU BJ32-14C249-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7606629

BMW X5 Series E70 Four Wheel Drive Transfer Box Control Unit Module 7606629

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2754241-2

BMW MINI Cooper R55 R56 R57 Engine Computer Mount Support Bracket Holder 2754241

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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Part no. 1388277080

Citroen Relay 35L III Positive Battery Wiring Loom Harness Diesel 1388277080

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729008500-2

Mercedes W166 W204 Display Screen Information Navigation Dashboard A1729008500

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2079011900

Air Module Mercedes W207 A207 Control Unit ECU Air Module Sensor A2079011900

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8L0971035H

Audi A3 S3 8L Front Door Card Panel Wiring Harness Right O/S 8L0971035H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6511501433

Mercedes W176 W246 Glow Plug Wiring Harness Loom OM651 Engine A6511501433

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8512415

Mini Cooper D R60 ALL4 N47N 112HP Diesel Engine Control Unit ECU DDE 8512415

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8586571

BMW 1 3 F20 F30 LCI B47 Engine Gearbox Module Wiring Cable Loom Harness 8586571

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7248911-1

BMW F20 F21 F22 F30 F31 Fog Light Lamp Wiring Harness Plug Left N/S 7248911

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971228AC

Audi Q2 GA Volkswagen T Roc Battery Terminal Positive Cable 5Q0971228AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1695400606

Mercedes-Benz A W169 Parktronic Parking Sensor Wiring Cable Rear PDC A1695400606

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959593N

Audi A4 B9 Front Door Module Control Unit ECU Driver's Side 8W0959593N

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P6919603

VW Volkswagen Touareg 7P Dashboard Multimedia Display Screen Panel 7P6919603

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1J6035111

VW Volkswagen Touareg 7L Golf 4 CD Changer 1J6035111

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049009501

Fuse Box Mercedes W204 Rear SAM Relay Control Unit Module A2049009501

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0909601E

VW Volkswagen Touareg 7L Air Module Control Unit ECU SRS 3D0909601E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7640875

Alternator Generator BMW F10 F20 F30 LCI Diesel Engine Unit Denso 180A 7640875

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0971693B

Audi Q5 8R Rear Door Card Wiring Loom Left Right N/O/S 8R0971693

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8267406

Headrest Adjustment BMW E46 E64 Front Right O/S Seat Actuator 8267406

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9128573

BMW 1 Series E87 LCI E87N Cable Set PDC Front Wiring Loom 9128573

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0959760

Audi Q7 4L Front Memory Adjustment Module Control Left Right N/O/S 4L0959760

€89.95

Free delivery: Nov 12 – 13

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Part no. 4E0910441

AUDI A8 S8 D3 Reversing Camera Control Module Rear View Unit ECU 4E0910441

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7620985-1

Mini Cooper S R60 ALL4 N18 1.6 184HP ECU Kit Unit DME 7620985 CAS3 + Key Manual

€450.95

Free delivery: Nov 12 – 13

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Part no. 8H0959655G

Audi A4 B7 Air Module Control Unit ECU Impact Sensor 8H0959655G

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009829608

Mercedes W204 W212 W222 Auxiliary Additional Generator Battery A0009829608

€165.95

Free delivery: Nov 16 – 20

If paid before 14:00

Part no. A2519005200

Mercedes R350 V251 Head Unit Radio Player Navigation Media Bluetooth A2519005200

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959793E

Audi A4 B8 Door Module Front Drive Side Control Unit ECU 8K0959793E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907064BN

Audi A6 C7 Saloon CCM Comfort Control Module Onboard Unit ECU 4H0907064BN

€23.95

Free delivery: Nov 12 – 13

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Part no. A6395406209

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406209

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971349JQ

Audi A3 8P 1.2 TFSI CBZB Alternator Wiring Harness Cable Loom 1K0971349JQ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906022FL-1

Audi A6 C6 2.0 TDI 233HP CAGB Engine Control ECU Kit 03L906022FL Key + Lock

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1495806

Mini Cooper One R50 R52 R53 JCW Starter Heat Resistant Plate 1495806

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9214813

BMW X5 E70 Safety Airbag Control Unit Module ECU X6 E71 Bosch 9214813

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8606445

Wiring Harness BMW F20 F21 F30 LCI Motor Sensor System Module 1 8606445

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8512047-4

BMW E90 E91 LCI N47N 320d 184HP Engine Control Unit ECU DDE 8512047 Automatic

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9393667

BMW F10 LCI Body Control Module ECU Unit JBBFEIII V2 PL6 9393667

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7195768

BMW 7 Series E65 E66 E67 Battery Holder Hold Down Strap Bracket 7195768

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6935597-TS1

BMW E81 E87 Front Rear Parking Sensor PDC Titansilber Silver 354 6935597

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9196937

BMW E93 Convertible Seat Control Unit Module ECU 9196937 FSV 7.14.0

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059002629

Surround View Camera Mercedes W205 W447 Camera Control Unit Module A2059002629

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665402150

Mercedes W166 Seat Fuse Relay Junction Box Block A1665402150

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229005315

Bluetooth Module Mercedes W176 W205 Multimedia Control Unit ECU A2229005315

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6429002900-4

Mercedes W204 C350 CDI OM642.830 Engine Module ECU Kit A6429002900 Key Lock

€503.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779005505

Door Module Mercedes W177 W247 Rear Left Right N/O/S Control Unit A1779005505

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6957330

BMW E60 E61 E63 Power Distribution Electrical Fuse Box 6957330

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-2C491-AD

Range Rover L405 Electric Parking Handbrake Control Module DPLA-2C491-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0907530E

VW Golf Mk5 Gateway Module Diagnostic Interface Control Unit ECU 1K0907530E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2479008615

Mercedes GLC X253 Camera Lane Assist Control ECU Module Unit A2479008615

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7253188-1

BMW 3 Series E92 Sports Seat Left Right Thigh Support Cover Trim Leather Dakota

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9227752

BMW F20 F21 F22 F23 F30 F80 M3 F82 F36 Distributor B Multifuse 9227752

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9134631

Seat Module BMW E65 E66 Front Seat Control Unit ECU 9134631

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0035421619

Mercedes W177 Relay 052 Engine Fuse Box Relay Slot B D E 70A Tyco A0035421619

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0035456

Audi A7 4G Aerial Antenna Amplifier Control Unit Module 4H0035456

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009820123

Relay Mercedes W166 Voltage Dip Protection Start/Stop Relay Module A0009820123

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395406509

Wiring Loom Mercedes W639 Vito Cable Door Wiring Cable A6395406509

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9243896

Central Information Display BMW F10 F11 LCI Boardmonitor Screen 7" 9243896

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9253111-2

BMW F20 F21 F22 Positive Plus Pole Battery Blow Cable 9253111

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7843338

Engine Wiring BMW F10 M5 F13 M6 Valvetronic Servomotor Cable Loom 7843338

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06K907425B-22

VW Golf Mk7 5G R 2.0 TSI CJXC 300HP 4motion Engine ECU Kit 06K907425B Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005459812

Mercedes Vito W447 W213 OM654 Power Distribution Relay Unit Module A0005459812

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009821923

Mercedes W205 Interior Trunk Fuse Box Automotive Pink Relay A0009821923 Red

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907468AF

Audi A8 D4 Central Diagnostic Getaway PKO Control Unit Module ECU 4H0907468AF

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8518569-5

BMW F20 F21 F30 F31 N47N 118d 318d 143HP Engine Control ECU DDE 8518569 Manual

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK3T-15K868-EB

Ford Transit Mk8 Rear Bumper Parking Sensor Wiring Loom Harness BK3T-15K868-EB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645402408

Mercedes ML W164 Rear Door Ribbon Electrical Cable Wiring Right O/S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C903023S

Audi A1 8X 1.4 TSI CAXA Alternator 03C903023S

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V51-14A075-AC

Ford Fiesta Mk7 Positive Battery Terminal Fuse Box Cover Lid 8V51-14A075-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8638585

BMW F20 F21 F30 F31 LCI Cable Alternator-Starter-Base B+ 8638585

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0959655AS

Seat Leon Skoda Octavia 5E Air Module Control Unit ECU 3Q0959655AS

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669068801-2

Mercedes ML W166 Rear Lamp Tailgate Light Wire Connector Right O/S A1669068801

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6977427

BMW E87 E90 E91 Mini Cooper R50 R52 R53 Air Module Control Unit ECU 6977427

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1779004106

Door Module Mercedes C118 W177 W247 Front Right O/S Control Unit A1779004106

€23.95

Free delivery: Nov 12 – 13

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Part no. 6782372

BMW X1 X3 Z4 E83 LCI E84 E89 E90 E91 E92 Speed Sensor Cluster 6782372

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H4907357B

Audi A8 D4 Headlight Head Light Lamp Range Control Unit Module ECU 4H4907357B

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6910920

Mini Cooper One R50 R53 Heater Temperature Control Actuator 0132801166

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4478200087

Mercedes Sprinter W906 Connector AUX USB Adapter Port Socket A4478200087

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009051910

Battery Cable Mercedes W177 W247 Negative Lead Terminal Harness A0009051910

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665402450

Mercedes ML W166 Fuse Box Front Relay Control Unit Module A1665402450

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139008430

Mercedes W910 Gearbox Control Module A2139008430

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6826984

Air Module BMW F20 F21 F30 F31 Control Unit 6826984 0285013630

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2059008618

Mercedes W205 Module SRS Control Module Unit A2059008618

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9171948

BMW X5 X6 E70 E71 Air Module Control ECU Unit Module 9171948 0285010250

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7G9T-14A073-DF

Ford Galaxy Mk2 Fuse Box Body Control Module BCM Unit 2.0 TDCi 7G9T-14A073-DF

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911023N

Audi A3 8V 1.4 TFSI Petrol Starter Motor Engine Actuator Unit 0AM911023N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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