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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Seat Alhambra 7N VW Sharan 7n Reversing Camera Control Module ECU 7N0907441B

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. NNW500440

Range Rover L322 Four Wheel Drive Transfer Box Module NNW500440

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9337205

BMW F32 Door Wiring Front Door Right Loom Cable Wiring Harness 9337205

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BJ32-18808-BB-1

Range Rover L494 Door Speaker Front Rear Left Right N/O/S BJ32-18808-BB SET

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1728200526

Mercedes R172 SLK Air Module SRS Control Unit ECU A1728200526

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 503446570201

Vauxhall Movano C BCM BCM Body Control Module Fuse Box Unit 503446570201

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KCR11

Chip Power Chiptuning Box CRS KCR11 Control Unit Module Tuning Set

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8H0971589AD

Audi A4 B7 Steering Wheel Multifunction Wiring Loom Harness Cable 8H0971589AD

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6798872

BMW F10 F11 F30 F31 Wheel Electronics Module RDC 433MHZ Control Unit 6798872

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3C8971121BN

VW Volkswagen Passat CC Wiring Harness Cable Front Passenger Side 3C8971121BN

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1569005100

Mercedes C204 C63 AMG Engine ECU 156.985 487HP Key Lock Set Auto A1569005100

€854.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8U0907468Q

Audi Q3 8U Gateway Control Module Unit ECU 8U0907468Q

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049004406

Mercedes W204 Radio Stereo CD Player Head Unit A2049004406

€108.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6791131

BMW F01 ICM Module Integrated Chassis Management QL ES Control Unit 6791131

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4B0951173

Audi A3 8L A4 B5 A6 C5 Alarm Control Module Unit ECU 4B0951173

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6F0971161T

Seat Arona KJ7 Door Wiring Harness Loom Cable Rear Right O/S 6F0971161T

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1509691

Ford Mondeo Mk4 Gearbox Earth Ground Cable Wiring Lead 8G9T-14324-PB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9225619

BMW F10 Electronic Front Seat Memory Module Control Unit ECU 9225619

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9238195

Fuse Box Grouping BMW F10 F11 F12 Fuse Placement Map Card Diagram 9238195

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5C0035680C

Volkswagen Scirocco Tiguan 5N Display Screen Multimedia Nav Unit 5C0035680C

€560.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2188246

Ford Transit Custom Rear Bumper PDC Cables Wiring Loom Harness JK2T-15K868-AB

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8X0919475AL

Audi A1 S1 8X PDC Parking Assistance Control Module Unit ECU 8X0919475AL

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6395402710

Mercedes Vito W639 Key Reader Ignition Lock Cable Wiring Harness A6395402710

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3C0907651

Volkswagen VW Golf Mk6 1K Acceleration Sensor 3C0907651

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2044402607

Earth Ground Cable Mercedes W204 W207 Battery Wiring Loom Engine A2044402607

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4209003305

Mercedes Sprinter W907 W910 Radio Stereo Player Head Unit Module A4209003305

€222.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E0953549T-1

Audi A4 RS4 B7 Steering Column Control Module Unit 8E0953549T

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3C0951171C

Volkswagen Passat B7 Golf Mk6 Roof Alarm Sensor Module 3C0951171C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1378238

BMW E60 E63 E87 E90 E91 Relay Make Contact Orange 1378238

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-14A067-CA

Land Rover Discovery Sport L550 Fuse Box Fusebox Bracket Mount K8D2-14A067-CA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7G9T-14B533-KC

Land Rover Freelander 2 L359 Door Control Unit ECU Front Left N/S 7G9T-14B533-KC

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5QA971228G

VW Volkswagen Tiguan Mk2 Touran Mk3 Positive Battery Cable Lead 5QA971228G

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 04L907309M

Skoda Superb 3V 2.0 TDI DFEA 150HP Engine Control Unit ECU 04L907309M Manual

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1Z0971161G

Skoda Octavia Mk2 Rear Door Wiring Harness Cable Right O/S 1Z0971161G

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K211-K223

Chip Power Chiptuning Box GS2 K211-K223 Control Unit Module Tuning Set

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7N0959794K

VW Sharan 7N Rear Door Module Control Unit Left N/S Passenger Side 7N0959794K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8617050-2

Mini Cooper R56 LCI R58 N16 1.6 122HP Engine ECU Kit DME 8617050 CAS 3 + Key

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DH22-14B192-AA-1

Range Rover Velar L560 Fuse Relay 4-Pin 20A 12V Unit Set X2 DH22-14B192-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2125406505

Mercedes W212 Door Wire Wiring Loom Front Right O/S A2125406505

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2128208726

Mercedes W212 Door Module Rear Left N/S Control Unit ECU A2128208726

€23.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. A2035450301

Mercedes-Benz C CLK Class W203 W209 Battery Terminal Fuse Box A2035450301

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA980653E

Audi A3 S3 8Y Front Camera FAS Lane Assistance Control Unit 5WA980653E

€75.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8W6971029BF

Audi A5 F5 Front Door Wiring Harness Cable Driver's Side 8W6971029BF

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G9035225C

Audi A6 C7 Avant Antenna Amplifier Upper Left N/S 4G9035225C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055400182

Mercedes W205 W213 C238 C253 Relay Fuse Box Top Cover Lid Cap A2055400182

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0945095B-3

Audi TT 8J Rear Tail Light Lamp Wiring Harness Cable Left N/S 8J0945095B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9176878

BMW E81 Body Control Module Unit BCM ECU L2 9176878

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8482365

BMW G20 Installation Cable Wiring Loom 8482365

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8R0959655B

Audi Q5 8R Air Control Unit Module ECU 8R0959655B

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA962132

Volkswagen Golf Mk8 Antenna Amplifier Transmitter Receiver Module ECU 5WA962132

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1685405008

Mercedes A-Class W168 Door Cable Harness Wiring Loom Front Right A1685405008

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P6907530J

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530J

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3451658

BMW 3 X3 Series E46 E83 LCI Earth Cable Flow Electric Battery Negative 6919584

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0907247A

Audi Q7 4L Keyless Entry Amplifier Control Box Module Aerial Antenna 4F0907247A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2661539779-2

Mercedes W169 W245 M266.920 95HP Engine Control ECU Kit A2661539779 Manual

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9207008

Mini R55 R56 LCI R57 Door Wire Cable Harness Wiring Loom Passenger Side 9207008

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8844294

BMW X1 U11 High-Voltage Battery Module Connector 8844294

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 46863927

Vauxhall Movano C Parking Distance Control PDC Unit Module 46863927

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6397600704

Mercedes Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600704

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03C906024CD

Seat Ibiza 6j Mk4 1.4 CGGB 85HP Engine Control Unit ECU 03C906024CD Manual

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7211557

BMW E88 Cabrio Convertible Folding Top Roof ECU Module CVM6 9211494

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9253111-2

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

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9151979

BMW E60 E90 Dashboard Dash Onboard Monitor Display Screen 8.8" CCC

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3AA906507A

VW Volkswagen Passat CC Engine Control Unit ECU Bracket Holder Tray 3AA906507A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5N0035341C

Volkswagen Scirocco Mk3 Multimedia Interface Module Box 5N0035341C 5N0035342B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0941004E-2

Audi Q7 4L Front Headlight Xenon Wiring Cable Harness Right O/S 4L0941004E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G0951177

Audi A6 C7 A7 4G Alarm Movement Detector Roof Headliner 4G0951177

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. M8A2-14N166-AB

Range Rover Velar L560 Battery To Junction Box Wiring Loom Harnes M8A2-14N166-AB

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 95B980654D

Porsche Macan 95B Front Windscreen Lane Assist Kafas Camera 95B980654D

€218.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6421507100

Mercedes W164 ML350 OM642 4-Matic 224HP Engine Control ECU A6421507100 Automatic

€146.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BK2T-14B446-AE

Ford Transit Custom Front Panel Catch Cable Wiring Harness BK2T-14B446-AE

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059007437

Sam Module Mercedes S205 Relay Fuse Box Rear Control Module In Trunk A2059007437

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 95561264500

Porsche Cayenne 9PA Centre Console Armrest Wiring Harness Cable Loom 7L5971641

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048702789

Aerial Antenna Amplifier Mercedes W204 Estate Left N/S Booster Unit A2048702789

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8E1910115A

Audi A4 B7 Quattro Engine Control Unit ECU 2.0 TFSI 200HP BWE 8E1910115A

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9312764

Body Control Module BMW F10 LCI ECU Junction Box PL6 JBBFE III V2 9312764

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8590102

Alternator Cable BMW 5 G30 G31 G12 B57 Battery Wiring Alternator B+ 8590102

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0937211A-1

VW Volkswagen Touareg 7P Fuse Box Relay Control Module 7P0937211A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. E84-SCREEN

BMW X1 E84 Radio Navigation Head Unit Android CarPlay Screen Display 10.25"

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0959591A

Audi A8 D4 4H Sunroof Wind Deflector Module Control Unit 4H0959591A

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. HK83-14D617-BB

Land Rover L550 L538 Jaguar XE Door Module Front Passenger Side HK83-14D617-BB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9381305

Radio Professional BMW F20 F21 F30 F31 CD Player DAB Bluetooth 9381305

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7928690

BMW F74 Gran Coupé Radio Audio Remote Control Receiver 7928690

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7286050

BMW F20 Control Unit Module Wing Mirror Power Fold 7286050

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2075406233

Mercedes A207 Front Seat Wiring Harness Cable Left Right N/O/S A2075406233

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1776203400

Mercedes W177 W247 Battery Bracket Mount Holder Support A1776265300

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 11110150000

Audi Q3 F3 Headlight LED Inner Module Unit Left N/S 11080370000

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469002603-1

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6887754

Airbag Module BMW F20 F21 F30 F31 F32 ECU ICM Plus Control Unit Air Bag 6887754

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2115450301-1

Mercedes S211 W211 W219 Fuse Distribution Box Unit A2115453901

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T0971035C

Audi A5 S5 RS5 8T Door Wire Harness Loom Cable Wiring Driver's Side 8T0971035C

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2S7T-14B192-AA

Range Rover L322 Black Relay 4-Pin Unit 12V 40A 2S7T-14B192-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2479009312

Mercedes W910 Telematics Module Communication Blutooth Control A2479009312

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YIE500081PVJ

Rover Sport L320 Sat Nav Display Screen Multimedia YIE500081PVJ

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8091664

Baterry Cable Bracket BMW X3M F97 X4M F98 S58 Alternator Wire Holder 8091664

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L911021E

Audi A4 B8 Starter Motor Engine Motor Actuator Diesel Bosch 03L911021E

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9426210

Mini F56 F57 BMW F45 B48D 231HP Engine Control Module Unit ECU 9426210 Manual

€313.95

Free delivery: Aug 5 – 10

If paid before 14:00

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