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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Ford Focus Mk2 C-Max Body Control Module Fuse Box Bracket Holder 4M5T-14A124-AA

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. LR028515-2

Land Rover Range Rover L322 LED Rear Light Lamp Left N/S Wire Harness LR028515

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A6395450203

Mercedes-Benz Vito W639 Fuse Box Cover Cap Trim A6395450203

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7614084

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2469009312-2

Mercedes X156 W176 W242 Radio Head Player Navigation Hazard Switch A2469009312

€170.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7P0907553AH

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

€170.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 2S6T-14A076-BA

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2055403103

Alternator Starter Wiring Harness Mercedes W205 GLC C253 OM651 A2055403103

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 03C906026AD

Audi A1 8X 1.4 TFSI CTHG 185HP Engine ECU Kit BCM + Key 03C906026AD Automatic

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6C0971225

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8T0907468T

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 059911024K

Starter Motor AUDI Q7 4L VW Touareg MK2 3.0 TDI Diesel Starter 059911024K

€75.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8W0971365G

Audi A5 F5 Seat Belt Warning Wiring Harness Cable Front Left N/S 8W0971365G

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8R0971104AL

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

€61.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2214408109

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

€37.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. YMM502591B

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. AV4T-14301-AA

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8P0919475F

Audi TT 8J Parking Distance Sensor Control Unit Module Rear 8P0919475F

€156.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2208200764-2

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

€56.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8617710

Mini F45 F56 B38 Petrol Engine Wiring Loom Harness 8617710

€66.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. DK62-13W030-DJ-2

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. F1ET-14F142-BC

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1669009513

Mercedes W176 W204 DAB Radio Receiver Control Unit Module ECU A1669009513

€94.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8644495

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

€94.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 06K907425J-5

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

€189.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 3AA907273D

Volkswagen Passat B7 Tyre Pressure Control Unit Sensor Module 3AA907273D

€213.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1725401909

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

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2465451440

Mercedes W176 Fuse Relay Box Cover Cap Top Trim Lid A2465451440

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 52233139

Vauxhall Movano C Engine Exhaust Sensor Wiring Harness 2.2 Diesel 52233139

€66.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9128982

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

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 3AA937087A-1

VW Volkswagen Passat B7 CC 35 36 BCM Body Control Module Unit ECU 3AA937087A

€47.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9A763762001

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

€47.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2218705687

Mercedes W221 Linguatronic Control Module Unit ECU English Version A2218705687

€85.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7806042

Mini R55 R56 Connecting Wiring Cable Cooper D W16 Diesel 7806042

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5Q0971371

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

€56.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 0AM911023M

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 2680492

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2465401350-1

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 1J0971120BS

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

€61.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. AH42-18808-EA

Range Rover L322 Door Speaker Harman Kardon Rear Left Right N/O/S AH42-18808-EA

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7843335

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

€47.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2055408117

Mercedes W205 W213 X253 Electrical Wiring Harness Cable A2055408117

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8577839-1

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

€180.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5A22699

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4G8971687CH

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9808786

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5E3972297C

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. YMM502621B

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

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. DAN989

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

€94.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8601245

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A4145400130

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 94860421401

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

€42.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4M0959595N

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 5Q0971250T

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

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. F1ET-14F144-BC

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6839769

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

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 4G1919129

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

€85.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7CA971067

Volkswagen Crafter SY Parking Assist Adapter Wiring Harness Cable 7CA971067

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9123038-1

BMW E81 E87 E91 Switch Cluster Cruise Control Stalk Unit 9123038

€194.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. LU5T-14G371-GKC

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

€165.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8642652

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8714621

Mini Cooper One F55 F56 F60 Telematics Control Unit Module 8734756

€237.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8U0971687D

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

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 04L907309B-5

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

€142.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8W6971227B

Audi S5 F5 Positive Battery Terminal Cable Wiring Harness 8W6971227B

€56.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 0097287338

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

€446.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9247066

BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9247066

€66.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8H52-18D540-AC

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

€89.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. LR135168

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

€317.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6R4971693C

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 2GA971395

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6974373-1

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8P4971035AB

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6821204

Mini Clubman F54 Negative HV Battery Terminal Cable Harness Wiring Loom 6821204

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2128208726

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A1321532779

Smart Fortwo 451 M132 71HP Engine Control Unit ECU A1321532779 Automatic

€56.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. AH4Q-12A650-SAD

Ranger Rover L322 3.6 368DT 272HP Engine Control ECU AH4Q-12A650-SAD Automatic

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8T8971687AA

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2075400713

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

€113.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8W0971228AM

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

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. AG91-9F7479-AB

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8W1959595D

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9313656-1

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

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A2055408104

Battery Cable Mercedes W205 X253 Diesel OM651 Alternator Wiring A2055408104

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8573260-5

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

€308.95

Free delivery: Sep 16 – 17

If paid before 14:00

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

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9845632

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

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. A9075407312

Mercedes W907 Battery Fuse Box Positive Distribution Terminal A2479061803

€56.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8506434-4

BMW E81 E84 E87 E90 LCI 18d 118d 318d N47 ECU Kit DDE 8506434 CAS3 Key Automatic

€251.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9350336

BMW F06 F12 F13 F80 Mini F56 Radio CD Player Head Unit 9395949

€75.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. LR3T-14G087-VG

Ford Transit Mk8 Ranger MK3 Telematics Control Unit Module LR3T-14G087-VG

€94.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8638742

BMW G11 G12 G20 G30 Ground Line Battery Earth Cable Wire Cable 8638742

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 8H1971029AK

Audi A4 Cabriolet B7 Door Harness Front Driver's Side 8H1971029AK

€32.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 9181411-2

BMW F07 GT F10 F11 Hands Free Telephone Microphone Unit Black 9181411

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. F2GT-15K619-BB

Ford Mondeo Mk5 Keyless Entry Receiver Module ECU F2GT-15K619-BB

€51.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 6G9T-14B192-DA-1

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit Set Kit 6G9T14B192DA

€23.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. LK62-9D370-BB

Land Rover Range Rover Velar L560 Fuel Pump Control Unit Module LK62-9D370-BB

€42.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. E83-LCI-SCREEN

BMW X3 E83 LCI Head Unit GPS Navigation Display Screen Android Auto CarPlay 9"

€284.95

Free delivery: Sep 16 – 17

If paid before 14:00

Part no. 7525434-1

Mini R52 R53 W11 Battery Cable Wire Harness Starter Base B 7525434

€28.95

Free delivery: Sep 16 – 17

If paid before 14:00

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