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 Ranger Mk6 Fuse Box Control Unit Housing Cover Trim Panel AB39-14A076-BF

€99.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7590857-4

Mini Cooper S JCW R56 N14 1.6 211HP Engine ECU Kit DME 7590857 CAS3 Key Manual

€688.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6840519

Negative Lead Battery Cable BMW G11 G30 G31 X3 G01 IBS Wiring Harness 6840519

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059007339

Mercedes W205 BCM Body Control Module Unit ECU A2059007339

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. TSR-152

BMW E88 Cabrio Convertible Battery Control Unit Module ECU 12V TSR-152

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0937085AC

VW Volkswagen Golf GTI Mk7 Body Control Module BCM CHHN Automatic 5Q0937085AC

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9270501

BMW X3 E83N E70 LCI E71 PDC Parking Ultrasonic Sensor Schwarz 7687127

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9069006403

Mercedes W906 Electrical Center Fuse Box SAM Body Control ECU Module A9069006403

€465.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3Q0907338P

Audi Q2 GA Headlight Light Headlamp Lamp Control Module Unit ECU 3Q0907338P

€104.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2479004111

Mercedes W177 Multimedia Radio Control Module Unit ECU A2479004111

€232.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. M8A2-14A067-CA

Range Rover Velar L560 Fuse Box Cover Bracket Housing 6G9T-14A067-AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0937125B

Volkswagen Golf Sportsvan Fuse Box Engine Compartment Relay Unit 5Q0937125B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9389600

BMW Gran Turismo G32 Radio Aerial Antenna Amplifier AM/FM 9389600

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055404596

Mercedes W205 Electrical Ground Line Wire Earth Cable A2055404596

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L0915138C

Audi Q7 4L Battery Mounting Bracket Part Holder 7L0915138C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AV6N-11000-GE

Ford Focus Mk3 Transit Connect Starter Motor Diesel Engine AV6N-11000-GE

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5CH971120E

Volkswagen Jetta Mk6 Front Door Wiring Harness Cable Passenger Side 5CH971120E

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0941824

Audi A6 C8 Fuse Box Relay Plug Socket Fuse Unit Holder Bracket 4H0941824

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7804127

BMW E60 E61 LCI 520d Cable Alternator Starter Base B 7804127

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055408987

Mercedes W205 Exhaust Wiring Harness Cable A2055408987

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9206936

BMW F12 Antenna Aerial Noise Suppression Filter Control Unit Right O/S 9206936

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 059971627D

Audi A6 C7 High Pressure Pump Fuel Line Electrical Wiring Harness 059971627D

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR007522

Land Rover Discovery 4 L319 Glow Plug Wire Wiring Cable Right O/S 4R8Q-12A378-BE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7857551

Battery Cable BMW F80 M3 F82 M4 Wire Lead Positive Alternator Starter B+ 7857551

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5F0907159E

Seat Leon Mk3 III Cupra 5F Body Impact Sound Control Module Unit 5F0907159E

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907801M

Audi A6 C7 Parking Brake Module Handbrake Actuator Control Unit 4H0907801M

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9359799

BMW i3 I01 F10 F20 F30 LCI KaFAS Camera Speed Control ECU Module Unit 9359799

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6809310

BMW F20 LCI F21 LCI F83 Telematics Communication Module Ecu Control Unit 6809310

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9340524

BMW X3 F25 X4 F26 Central Gateway Module Control Unit Lear ZGW-02 4SK 9340524

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G0919129A

Audi A5 8T A6 C7 A7 4G A8 4H TV Tuner Digital Video Control Module 4G0919129A

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 83A947356J

Audi Q3 F3 LED Rear Door LED Lighting Module Control Unit Left N/S 83A947356J

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7810860

BMW E90 E91 E92 LCI N47N Engine Alternator Starter Cable B 7810860

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. NX63-7C078-AA

Range Rover Velar L560 Automatic Transmission Wiring 2.0 D200 NX63-7C078-AA

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0915181H

Audi A3 8P Negative Cable Battery Terminal Wiring Loom 1K0915181H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 46355551

Vauxhall Movano C Toyota Proace Max Preheating Box Glow Plug Relay 46355551

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9231443

BMW 3 Series F30 F80 M3 Radio Antenna Amplifier Suppression Filter 9231443

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0051512101

Mercedes W168 W169 W245 Petrol Engine Starter Motor A0051512101

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9337880

BMW F20 F22 F30 Rear Electric Power Distribution Fuse Box 9337880

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8P0959433F

Audi A3 8P CCM Covenience Control Module Unit Relay Board ECU HELLA 8P0959433F

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7199819

Roof Module BMW Z4 E85 Roadster Cabrio Convertible Folding Top 7199819

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8585379

ECU BMW F30 330d N57N 258HP Diesel Engine Control Unit Automatic 8585379

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7581848-1

BMW E81 E87 LCI E90 116i 316i N45N ECU Kit DME CAS3 + Key 7581848

€455.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 059911022

AUDI Q5 8R Quattro 3.0 TDI Diesel CCWA CCWB Starter Motor 059911022

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7N0951171A

Volkswagen Caddy 2K Anti Theft Interior Roof Alarm Sensor 7N0951171A

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0971349S

Audi TT 8J Alternator Main Cable Wiring Harness Loom CBBB Manual 8J0971349S

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-19C299-AE

Land Rover Discovery Sport L550 Dashboard Display Screen 8" FK72-19C299-AE

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-14F681-AH

Land Rover Discovery Sport L550 Gateway Module Control Unit FK72-14F681-AH

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0907551-2

Audi S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Unit ECU Kit 8K0907551 Automatic

€303.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G0035502

Audi A7 4G8 Telephone Coupling Reception Antenna Amplifier 4G0035502

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0937084BS

Audi TTS FV 8S BCM Body Control Module Unit 5Q0937084BS

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0971228AA

Audi A4 A5 S5 8T 8K 3.0 TFSI Alternator Wiring Harness Loom Cable 8K0971228AA

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6840403

BMW F06 F07 LCI F10 LCI Mini F55 F56 F57 Radio Media Player Head Unit 6840403

€104.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048702126

Mercedes W204 Door Module Control Unit Module Front Right O/S A2048702126

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6906914

BMW X5 E53 Battery Cable Negative Wire 6919976

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9167397

Mini Cooper R57 R58 R59 Hands Free Telephone Microphone 9167397

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1665402350

Fuse Box Mercedes GLE W166 C292 W463 Relay Control Unit Module A1665402350

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4M0010006J

Audi Q7 4M Fuse Box Battery Terminal Cover Housing 4M0010006J

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 167859

BMW X5 Series E53 Widescreen Motorway and Trunk Road Unit Module 167859

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139001722

Mercedes W213 W907 Transmission Gearbox Control Unit Module ECU A2139001722

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5QC971566

VW Volkswagen Golf Cd1 Passat 3G AC Control Wiring Loom Harness 5QC971566

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 09D927601

Porsche Cayenne S 92a Automatic Gearbox Oil Pump Control Module ECU 09D927601

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8600358

BMW F20 F30 LCI MINI F55 F56 Integrated Relay Supply Module 8600358

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7C0937517AL

VW Crafter SY Fuse Box Distribution Relay Module Housing Bracket 7C0937517AL

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907401H-1

Audi A8 D4 3.0 TDI Quattro CDTA 258HP Engine ECU Kit 4H0907401 BCM + Key + Lock

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0959794A

Audi A6 S6 Avant Quattro 4F Door Control Unit ECU Rear Right O/S 4F0959794A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 57C941009-1

Skoda Karoq Front Headlight Headlamp LED Lamp Light Wiring Left N/S 57C941009

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 09K927750K

VW Volkswagen Transporter T5 ECU 2.5 Diesel Auto Gearbox Control Unit 09K927750K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. R60-SCREEN-1

Mini R60 R61 Instrument Cluster Speedometer Display Screen Android 8" Radio

€569.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7640755-8

BMW F20 116i N13 136HP ECU Module Unit Kit DME 7640755 Key + FEM + Lock Manual

€469.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0907357

Audi A3 8V Headlight Head Light Lamp Range Control Unit Module ECU 5Q0907357

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8377415

BMW E60 E61 E63 E64 Fuel Fillter Flap Cover Actuator 8377415

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A5D3C0

Keyless Entry BMW F40 G20 G21 G30 G31 Comfort Access Antenna 5A5D3C0

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7839662

BMW E90 E92 E93 LCI Cable Alternator Starter Base B 7839662

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. M8A2-14A390-KA

Range Rover Velar L560 Batter Wiring Loom Connector Plug M8A2-14A390-KA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0959663F

Audi A6 C7 Voltage Converter Stabilizer Control Module Unit ECU 8K0959663F

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0959663B

Audi A5 8T Voltage Converter Stabilizer Control Module Unit ECU 8K0959663B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06J903023A-1

Audi Volkswagen Seat Skoda Petrol Alternator Generator 14V 140A 06J903023A

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9134662

BMW 1 3 Series E87 E90 E91 E92 Seat Control Unit Module ECU 9134662

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4535402703

Smart ForTwo C453 Battery Negative Minus Wiring Cable A4535402703

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8T0959793M

Audi A5 8T Front Door Control Module Left N/S Driver's Side Unit 8T0959793M

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0915181B

Audi A1 8X Negative Battery Terminal Cable Wiring 7P0915181B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048701826

Mercedes S204 Door Module Front Left N/S Control Unit ECU A2048701826

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CV1T-14B531-AC

Ford B-Max Front Door Module Control Unit Driver's Side CV1T-14B531-AC

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5G4971693K

Volkswagen Golf Mk7 5G Rear Door Wiring Harness Cable Loom Left N/S 5G4971693K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0C8927750AL

Audi Q7 4L 3.0 TDI Automatic Gearbox Module Control Unit ECU Diesel 0C8927750AL

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1715400107

Mercedes SLK R171 Window Lifter Lift Switch Cable Wiring Harness A1715400107

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4M0959793E

Audi A4 B9 A5 F5 Front Door Control Unit Module ECU Left N/S 4M0959793E

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6824128

BMW F45 Mini F60 Hybrid High Voltage Cable Harnes 6824128

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2909003001

Mercedes C238 E53 4matic Transfer Case Torque Distribution Control ECU

€379.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2205404208

Mercedes W220 Rear PDC Parking Sensor Wiring Loom A2205404208

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009820412

Mercedes W176 W205 W212 Voltage Converter Power Distributor Plug A0009820412

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. HJ32-14K042-BB

Range Rover Evoque L538 Centre Console Wiring Loom Harness Cable HJ32-14K042-BB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9181455

BMW X1 Series E84 Antenna Aerial Noise Suppression Filter 9181455

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KK62-14B518-JD

Range Rover Sport L494 Rear Door Wiring Loom Harness Right O/S KK62-14B518-JD

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DPLA-14C725-CA

Range Rover L405 Front Rear Seat Memory Heating Module DPLA-14C725-CA

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2215450801-1

Mercedes W221 Fuse Box Control Unit SAM Module Relay A2215450801

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8510221-13

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 Automatic

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7560377

Cable Alternator BMW E81 E82 E87 E88 E90 E91 LCI Starter B+ 7560377

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8589170

Starter Harness BMW X3 G01 X4 G02 30dX 40dX B57 Cable Base B+ Loom 8589170

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

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