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.

More information

Find it faster

Match to your vehicle

Make

Mercedes-Benz Vito W639 Fuse Box Cover Cap Trim A6395450203

€23.95

Part no. 7614084

BMW F20 F21 F22 F30 F31 F32 F33 Negative Battery Cable Lead Ground 7614084

€23.95

Part no. A2469009312-2

Mercedes X156 W176 W242 Radio Head Player Navigation Hazard Switch A2469009312

€170.95

Part no. 7P0907553AH

VW Volkswagen Touareg 7P Adaptive Suspension Control Unit Module 7P0907553AH

€170.95

Part no. 7561380

BMW X3 E83 3.0iX M54 231HP xDrive Engine Control Module ECU 7561380 Automatic

€165.95

Part no. 2S6T-14A076-BA

Ford B-Max Fiesta Mk6 Fuse Box Cover Housing Lid Trim Cap 2S6T-14A076-BA

€23.95

Part no. A2055403103

Alternator Starter Wiring Harness Mercedes W205 GLC C253 OM651 A2055403103

€28.95

Part no. A6519007401-13

Mercedes W212 E250 CDI 204HP Blue Efficiency OM651 Engine ECU Kit A6519007401

€199.95

Part no. 6C0971225

Audi A1 8X 1.6 TDI Battery Positive Cable Plus Pole Wiring Harness 6C0971225

€23.95

Part no. 8475125-2

BMW X1 F48 Engine Control Unit ECU Kit 2.0 Diesel B47C20B 150HP Manual 8475125

€583.95

Part no. 8T0907468T

Audi A4 B8 A5 8T Gateway Control Unit Module ECU 8T0907468T

€23.95

Part no. 059907309J

Volkswagen Amarok 2H Engine Control Unit ECU 3.0 TDI 258HP DDXE Auto 059907309J

€180.95

Part no. 8R0971104AL

Audi Q5 8R Rear Bumper Parking Sensors Wiring Harness Loom 8R0971104AL

€61.95

Part no. A2214408109

Mercedes W221 Door Wiring Cable Harness Loom Rear Left N/S A2214408109

€28.95

Part no. YMM502591B

Land Rover Discovery 3 L319 Door Wire Harness Rear Left N/S YMM502591B YMM502591

€23.95

Part no. AV4T-14301-AA

Ford Kuga C394 Negative Battery Cable Wire Harness AV4T-14301-AA

€32.95

Part no. 6C0915181B

Audi A1 8X Negative Battery Terminal Earth Cable Lead 6C0915181B

€23.95

Part no. A2208200764-2

Mercedes W220 Rear Tail Light Lamp Side Wiring Plug Harness Left N/S A2208200764

€56.95

Part no. DK62-13W030-DJ-2

Land Range Rover Sport L494 Headlight Lamp Harness Wire Left N/S DK62-13W030-DJ

€23.95

Part no. F1ET-14F142-BC

Ford Transit Connect Door Module Front Left N/S Control Unit ECU F1ET-14F142-BC

€23.95

Part no. A1669009513

Mercedes W176 W204 DAB Radio Receiver Control Unit Module ECU A1669009513

€94.95

Part no. 8644495

BMW F46 Mini F56 F57 Engine Wiring Loom Harness Wire Cable B48 B48A20A 8644495

€94.95

Part no. 06K907425J-5

Seat Leon Cupra 5F 2.0 TFSI 290HP DNUC Engine ECU Module 06K907425J Dual Clutch

€189.95

Part no. A1725401909

Mercedes R172 Front Seat Air Module Wiring Harness Loom Left N/S A1725401909

€28.95

Part no. A2465451440

Mercedes W176 Fuse Relay Box Cover Cap Top Trim Lid A2465451440

€23.95

Part no. 52233139

Vauxhall Movano C Engine Exhaust Sensor Wiring Harness 2.2 Diesel 52233139

€66.95

Part no. 9128982

BMW F20 F30 F31 LCI Mini F55 F56 Compensator LTE UK Control Unit Module 9128982

€28.95

Part no. 5B551E5

Mini F65 F66 F67 BMW F74 Blind Spot Radar Sensor Control Module 5B551E5

€66.95

Part no. 9A763762001

Porsche Macan 95B GPS Vehicle Location Tracker Control Unit Module 7PP035620CD

€47.95

Part no. A2218705687

Mercedes W221 Linguatronic Control Module Unit ECU English Version A2218705687

€85.95

Part no. 7806042

Mini R55 R56 Connecting Wiring Cable Cooper D W16 Diesel 7806042

€23.95

Part no. 5Q0971371

VW Volkswagen Golf Mk7 Positive Battery Terminal Cable Lead Wiring 5Q0971371

€51.95

Part no. 0AM911023M

Volkswagen Audi Skoda Audi 1.6 TDI Diesel Engine Starter Motor 0AM911023M

€23.95

Part no. 2680492

Ford Kuga Mk3 Alarm Signal Control Module ECU LJ6T-14G113-JB

€32.95

Part no. A2465401350-1

Mercedes W156 W176 W246 Fuse Box Front Relay Control Unit Module A2465401350

€32.95

Part no. 1J0971120BS

Volkswagen Golf 1J Door Card Wiring Harness Loom Front Driver's Side 1J0971120BS

€61.95

Part no. 7542310-5

Mini Cooper S R52 R53 W11 Petrol Engine ECU Kit DME 7542310 Keys EWS Manual

€151.95

Part no. AH22-19H440-AD

Land Rover Range Rover Sport L320 Keyless Entry Module Unit ECU AH22-19H440-AD

€61.95

Part no. 1682422-2

Ford Fiesta Mk7 Central Radio Panel Control Switch Duct Frame 8A6T-18K811-BE

€89.95

Part no. 5H9971693S

Volkswagen Golf R CD1 Rear Door Wiring Loom Cable Harness Left N/S 5H9971693S

€23.95

Part no. 7843335

BMW F10 M5 F12 M6 Engine Wiring Harness Valvetronic Servomotor Cyl.1-4 7843335

€28.95

Part no. EK52-14D618-AD

Range Rover Sport L494 Door Control Unit Module Front Driver Door EK52-14D618-AD

€32.95

Part no. DG9T-19H464-FB-1

Ford Mondeo Mk5 Aerial Antenna Amplifier Module Control Unit DG9T-19H464-FB

€23.95

Part no. A2055408117

Mercedes W205 W213 X253 Electrical Wiring Harness Cable A2055408117

€23.95

Part no. 8V51-10A789-AE

Ford Fiesta Mk7 Battery Box Tray Housing Holder Bracket Mount 8V51-10A789-AE

€23.95

Part no. 8T0959665B

Audi A5 8T 8F Front Seat Longitudinal Switch Control Module Left N/S 8T0959665B

Product currently unavailable

Part no. 8P0907115E-1

Audi A3 8P Engine Control Unit ECU 2.0 TFSI BWA 200HP Automatic 8P0907115E Kit

€218.95

Part no. 8577839-1

BMW F32 F33 430d N57N 258HP Engine ECU DDE Kit 8577839 FEM + Key Automatic

€180.95

Part no. 5A22699

BMW F74 Gran Coupé Engine Computer Module Unit Mount Holder Bracket 5A22699

€32.95

Part no. 4G8971687CH

Audi A7 4G Rear Door Wiring Harness Cable Left Right N/O/S 4G8971687CH

€32.95

Part no. 9808786

Mini Paceman R61 Front Right O/S Window Lifter Mechanism Motor Regulator 9808786

€32.95

Part no. 5E3972297C

Skoda Octavia IV Door Harness Loom Cable Front Left Right N/O/S 5E3972297C

€23.95

Part no. YMM502621B

Land Rover Discovery L319 Door Wire Harness Rear Right O/S YMM502621B YMM502621

€28.95

Part no. DAN989

Range Rover L322 Alternator Generator 14V 150A 3.6 TDV8 Diesel Denso DAN989

€94.95

Part no. DT1T-14B526-BA

Ford Transit Connect Mk2 Volstage Stabilizer Control Unit Module 1769268

€23.95

Part no. 8601245

Earth Ground Cable BMW i3 I01 Hybrid Rex Electric Engine Wiring 8601245

€23.95

Part no. A4145400130

Mercedes-Benz Vaneo W414 Cable Starter Line Positive Line Battery A4145400130

€23.95

Part no. 94860421401

Porsche Cayenne 92A Macan 95 Starter Motor 4.8 V8 Petrol 94860421401

€42.95

Part no. 4M0959595N

Audi Q7 4M Rear Door Control Module Unit ECU Left Right N/O/S 4M0959595N

€32.95

Part no. 5Q0971250T

Volkswagen Golf Mk7 Seat Leon 5F Battery Wire Negative Earth Lead 5Q0971250T

€28.95

Part no. F1ET-14F144-BC

Ford Transit Connect Door Module Front Right O/S Control Unit ECU F1ET-14F144-BC

€23.95

Part no. 6839769

KaFAS Module BMW F10 F20 F30 Mini F55 F56 Assist Camera Control Unit 6839769

€23.95

Part no. 4G1919129

Audi A1 8X A4 B8 A6 C7 A7 4G TV Tuner Module Control Unit 4G1919129

€85.95

Part no. 7CA971067

Volkswagen Crafter SY Parking Assist Adapter Wiring Harness Cable 7CA971067

€23.95

Part no. 9123038-1

BMW E81 E87 E91 Switch Cluster Cruise Control Stalk Unit 9123038

€194.95

Part no. LU5T-14G371-GKC

Ford Fiesta Mk8 Sat Nav Nody Control Module Unit LU5T-14G371-GKC

€165.95

Part no. 8642652

BMW G30 Battery Negative Ground Cable Line Equi Potential Bonding LEB 8642652

€23.95

Part no. 8714621

Mini Cooper One F55 F56 F60 Telematics Control Unit Module 8734756

€237.95

Part no. 8U0971687D

Audi Q3 8U Door Loom Wiring Harness Cable Rear Left Right N/O/S 8U0971687D

€28.95

Part no. 04L907309B-5

Skoda Octavia Mk3 5E 1.6 TDI CLHA 105HP Engine ECU Kit Ignition + Key 04L907309B

€142.95

Part no. 8517015-1

BMW X5 E70 X6 E71 30dX Diesel N57 245HP ECU Kit DDE 8517015 CAS3 Key Automatic

€446.95

Part no. 6962720

BMW 7 Series E65 Light Control Module Unit Lear LM E6X DYN. LWR (LCM) 6962720

€23.95

Part no. 8W6971227B

Audi S5 F5 Positive Battery Terminal Cable Wiring Harness 8W6971227B

€56.95

Part no. 0097287338

Ford Focus St-3 Mk3 Engine Control ECU 250HP 2.0 Petrol HM5A-12A650-VB Manual

€446.95

Part no. 9247066

BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9247066

€66.95

Part no. 8H52-18D540-AC

Land Rover Range Rover L322 Telestart Radio Receiver Control Unit 8H52-18D540-AC

€89.95

Part no. LR135168

Land Rover Discovery Sport L550 Engine Starter Motor Unit L8D2-11001-BC

€317.95

Part no. 6R4971693C

VW Volkswagen Polo 6R Rear Door Wiring Left Right N/O/S Harness Cable 6R4971693C

€23.95

Part no. 2GA971395

VW Volkswagen T-ROC A11 Front Door Ambiente Light Wiring Left N/S 2GA971395

€23.95

Part no. A2049000014

Mercedes W204 Multimedia Radio Stereo Player Head Unit A2049000014

€279.95

Part no. 6974373-1

BMW E81 E84 E87 E88 E90 Ultra Sonic Module Alarm System 9149671

€23.95

Part no. 8P4971035AB

Audi S3 8P Wiring Harness For Door Trim Panel D Cable Harness 8P4971035AB

€23.95

Part no. 9357962

BMW F20 F21 F30 F31 Parking Distance Control Wiring Loom Harness 9357962

€47.95

Part no. 6W83-15K866-AJ

Jaguar XF X250 Parking Sensor Park Assist ECU Module 6W83-15K866-AJ

€23.95

Part no. 4E0971030CE

Audi A8 D3 Passenger Door Wiring Loom Harness Cable Connector 4E0971030CE

€56.95

Part no. 1K0971228AB

Audi A3 8P VW Golf Mk6 Positive Battery Terminal Cable Wire Lead 1K0971228AB

€23.95

Part no. A2128208726

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

€23.95

Part no. 7190675-2

BMW E88 Cabrio Convertible Folding Hydraulic Hose Cylinders Left N/S 7190675

€113.95

Part no. 8T8971687AA

Audi A5 S5 8T Door Wiring Loom Harness Cable Rear Left N/S 8T8971687AA

€23.95

Part no. A2075400713

Mercedes A207 Convertible Front Seat Wiring Harness Cable Left N/S A2075400713

€113.95

Part no. 8W0971228AM

Audi A4 B9 A5 F5 Wiring Set Starter Alternator Earth Lead 2.0 TDI 8W0971228AM

€28.95

Part no. AG91-9F7479-AB

Ford Transit Connect Mk2 MAP Pressure Sensor Control Unit AG91-9F479-AB

€23.95

Part no. 8W1959595D

Audi Q5 FY Rear Door Control Module Unit Left Right N/O/S 8W1959595D

€23.95

Part no. 9313656-1

BMW 3 Series F30 F80 Boot Trunk Lid Tailgate Wiring Loom Harness Cable 9260012

€28.95

Part no. A2055408104

Battery Cable Mercedes W205 X253 Diesel OM651 Alternator Wiring A2055408104

€28.95

Part no. 8573260-5

ECU Kit BMW F20 F21 116d Diesel N47N 116HP DDE 8573260 Key FEM Lock Manual

€308.95

Part no. 8V41-13D154-BF-2

Ford Kuga Mk1 Headlight Headlamp Wiring Cable Front Right O/S 8V41-13D154-BF

€23.95

Part no. 9845632

BMW U06 X1 U11 F74 Ping Sensor Knock Sensor 220i B38N B38A15P Petrol 9845632

€23.95

Part no. A9075407312

Mercedes W907 Battery Fuse Box Positive Distribution Terminal A2479061803

€56.95

...

Showing 11287-11385 of 22739 products