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

Volkswagen VW Golf Mk7 Infotainment Radio Multimedia Head Unit 5G0035874

Product currently unavailable

Part no. 9474810

Air Module BMW G30 G31 X3 G01 X4 G02 SRS Control Unit ECU 9474810

Product currently unavailable

Part no. 9132712

BMW X3 X5 E83 E53 Telematics Control Unit Module GSM 9132712

Product currently unavailable

Part no. 1705483

BMW 5 7 X5 Series E38 E39 E53 Petrol M62 Alternator Generator Cooled 0986041750

Product currently unavailable

Part no. RHD-LK52-19C279-AB

Range Rover Sport L494 Digital Display Screen Sat Nav Multimedia LK52-19C279-AB

Product currently unavailable

Part no. A1695403733

PDC Wiring Mercedes W169 W245 Front Bumper Parking Sensor Loom Cable A1695403733

Product currently unavailable

Part no. A2219000804

Parking Module Mercedes W221 W216 Sensor PDC Distance Control Unit A2219000804

Product currently unavailable

Part no. 8512291-3

BMW E90 LCI N47N 320d 184HP ECU KIT DDE CAS 3 Key 8512291 Automatic

Product currently unavailable

Part no. A2095420018

Mercedes-Benz C CLK Class W203 C209 ESP Yaw Rotation Rate Sensor A2095420018

Product currently unavailable

Part no. A2479006612

Mercedes W177 W247 Control Unit Module ECU High A2479006612

Product currently unavailable

Part no. A6519009302-1

Mercedes W639 OM651.940 136HP Engine Unit Module ECU Kit A6519009302 Key Lock

Product currently unavailable

Part no. 8P0919475F

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

Product currently unavailable

Part no. 7806976-2

BMW X5 E70 3.0d M57N2 235HP Engine Control Unit ECU KIT DDE 7806976 CAS3 Keys

Product currently unavailable

Part no. 6890434

Blind Spot Sensor BMW G30 G31 G11 Lane Change Warning Module Unit RS-01 6890434

Product currently unavailable

Part no. 8364530

BMW 3 X3 Series E46 E83 Fuse Distribution Box 8364530

Product currently unavailable

Part no. Bosch S4 013 95Ah Accumulator-1

Bosch S4 013 Accumulator Battery 95Ah 800A 12V

Product currently unavailable

Part no. 7555361-1

BMW 3 5 Series E60 E61 E90 E91 N52 325i 525i ECU Kit DME CAS2 Key 7555361 Manual

Product currently unavailable

Part no. 6909665

BMW Mini Cooper One R50 R53 Radio Wave Stereo Cassette Tape Player 6909665

Product currently unavailable

Part no. A2218206889

Mercedes W221 Premium Audio Sound Amplifier Control Unit ECU A2218206889

Product currently unavailable

Part no. A0495453128

Steering Lock Cable Mercedes W169 W204 Connector Plug Wiring Loom A0495453128

Product currently unavailable

Part no. 8J0035223A

Audi TT 8J Audio Amplifier Premium Sound Booster Control Unit Bose 8J0035223A

Product currently unavailable

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Fuse Unit A2059007037

-40%

Part no. A2059007037

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Fuse Unit A2059007037

Product currently unavailable

Part no. A1729002301

Mercedes SLK R172 Door Control Unit Module Front Left N/S A1729002301

Product currently unavailable

Part no. A2128200097

Mercedes ML W164 W212 Remote Control DVD Media Entertainment Unit A2128200097

Product currently unavailable

Part no. 4F0907289N

Audi A6 C6 Body Control Comfort Unit Module BCM Unit ECU 4F0907289G

Product currently unavailable

Part no. A4478200035

Microphone Mercedes W447 W907 W910 Hands-free Interior Mic Unit A4478200035

Product currently unavailable

Part no. 8510137

BMW F10 F11 520d Diesel N47N 184HP Engine ECU Control Unit DDE 8510137 Automatic

Product currently unavailable

Part no. 9118823

BMW X3 E83 Radio Navigation System CID Control Unit CD Player 9118823

Product currently unavailable

Part no. A0009009021

Mercedes W177 AMG Automatic Gearbox Transmission Control Module ECU A0009009021

Product currently unavailable

Part no. 7788680

BMW X3 X5 E46 E60 E61 E65 E83 E53 M57N Starter Motor 7788680

Product currently unavailable

Part no. A2711500391-3

Mercedes W204 C250 BlueEFFICIENCY M271.860 204HP Engine ECU Kit A2711500391 Key

Product currently unavailable

Part no. 3Q0906121B

Audi A3 8V 30 TDI DGTE Diesel Fuel Pump Module Control Unit ECU 3Q0906121B

Product currently unavailable

Part no. 3414880

BMW X3 E83 Diesel Battery Positive Lead Red Cable Plus Pole Wire 3414880

Product currently unavailable

Part no. 6938975-1

CD Changer BMW E60 E61 E63 E64 Compact 6-disc Magazine 6938975

Product currently unavailable

Part no. A2129006212

SAM Module Mercedes W204 W212 Control Unit Electrical Fuse Box Unit A2129006212

Product currently unavailable

Part no. 8U0907115K

Audi Q3 8U 2.0 TFSI Quattro CCZC 170HP Engine Control ECU 8U0907115K Automatic

Product currently unavailable

Part no. 1543906

BMW G30 G31 X3 G01 X4 G02 G11 G32 Control Unit SAS Module ECU 1543906

Product currently unavailable

Part no. 281152957R

Renault Trafic Vauxhall Vivaro Radio Stereo Audio CD Player Head Unit 281152957R

Product currently unavailable

Part no. 9283247-1

BMW X1 E84 Radio Stereo CD Player Navigation Nav Head Unit 9283247

Product currently unavailable

Part no. 7559178

BMW E60 E63 E65 E85 E87 E90 E91 N52 Engine ECU DME 7559178 Automatic Gearbox

Product currently unavailable

Part no. 7639049-2

Mini Cooper S ALL4 R60 N18 Engine Unit ECU Kit DME 7639049 CAS 3 Key Manual

Product currently unavailable

Part no. A2215401682

Mercedes W221 Cover Fuse Box Case Trim Panel Lid A2215401682

Product currently unavailable

Part no. 0148459-BRG

Mini Cooper One R50 Fuel Filler Cover Flap British Racing Green A67 0148459

Product currently unavailable

Part no. A9068205626

Door Module Mercedes W906 Front Door Right O/S Control Module A9068205626

Product currently unavailable

Part no. 7847955

Differential Locking Module BMW F10 M5 F13 M6 Rear Axle Control Unit ECU 7847955

Product currently unavailable

Part no. A2139009406

Mercedes W213 Display Screen Information Navigation Dashboard A2139009406

Product currently unavailable

Part no. 9362351

Head Unit Mini F55 F56 BMW F45 i3 I01 Radio DAB Media Player Unit 9362351

Product currently unavailable

Part no. YUASA 5000 80Ah Accumulator-1

YUASA 5000 12V Accumulator Battery 80Ah 740A HSB096

Product currently unavailable

Part no. 9284272

BMW F10 Body Control Module Electronic Junction Box 9284272

Product currently unavailable

Part no. A1715450001

Mercedes SLK R171 Fuse Box Relay Control Unit Electric Module SAM A1715450001

Product currently unavailable

Part no. 9130296

BMW 3 X1 SERIES E84 E90 E91 E92 Petrol Instrument Cluster Speedo Clocks 9130296

Product currently unavailable

Part no. rhd-7526698

BMW X5 Series E53 3.0i M54 Wiring Loom Harness Engine Ignition Module 7526698

Product currently unavailable

Part no. 9364593

BMW VRLA / AGM 12V Accumulator Battery 80Ah 800A 9364593 7555719

Product currently unavailable

Part no. 9170721-2

Navigation System BMW E90 E91 E92 Professional CCC Sat Nav Controller 9170721

Product currently unavailable

Part no. 3Q0035842C

VW Volkswagen Golf Mk7 5G T-Roc A11 Radio CD Stereo Radio Head Unit 3Q0035842C

Product currently unavailable

Part no. A2469067901-1

Battery Positive Mercedes C117 W176 W246 Plus Pole Terminal Lead A2469067901

Product currently unavailable

Part no. A2075401550-1

Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550

Product currently unavailable

Part no. 8519663-6

Mini Cooper D R56 LCI N47N Diesel Engine ECU Kit DDE 8519663 CAS3 Keys Manual

Product currently unavailable

Part no. RHD-LR038721

Land Rover Discovery 4 L319 Negative Battery Terminal Mount BJ32-10C679-AE

Product currently unavailable

Part no. 09D927750FA

Volkswagen Touareg 7L Automatic Gearbox Module Control Unit ECU 09D927750FA

Product currently unavailable

Part no. 7583225-1

BMW E81 E87 LCI E90 116i 316i 1.6 N43 ECU Kit DME 7583225 CAS3 Key Manual

Product currently unavailable

Part no. 9302569

Parking Sensor PDC BMW i3 I01 Front Bumper Ultrasonic Ionic Silver B93 9302569

Product currently unavailable

Part no. 6983539-1

BMW 5 Series E60 Light Control Unit Module LEAR LM E6X MIT AHI 6983539

Product currently unavailable

Part no. RHD-A2075400250

Mercedes W204 Battery Clamp Fuse Protection Switch A2075400250

Product currently unavailable

Part no. A2479004411

Mercedes V177 W247 Windshield Camera Driver Assists Front Camera A2479004411

Product currently unavailable

Part no. 3455436

Mini Cooper One R55 R55N LCI High PL SPEG H4 Fuse Distribution Box 3455436

Product currently unavailable

Part no. 8P3971085

Audi A3 8P Rear Bumper PDC Wiring Parking Sensor Loom Harness 8P3971085

Product currently unavailable

Part no. 6968041

BMW X5 E53 Navigation System Sat Navi TV Video IBUS Module Unit 6968041

Product currently unavailable

Part no. A1729002601

Mercedes SLK R172 Door Control Unit Module Front Right O/S A1729002601

Product currently unavailable

Part no. 7546990-1

BMW E60 E63 E64 530i 630i N52 258HP ECU Kit DME 7546990 + CAS2 + Key Automatic

Product currently unavailable

Part no. 7810860

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

Product currently unavailable

Part no. RHD-8R2035666H

Audi S8 8T Multimedia MMI Head Unit Radio Player Control Module 8R2035666H

Product currently unavailable

Part no. 8516259

Engine Wiring BMW F20 F30 LCI B47 Loom Harness Cable 8516259

Product currently unavailable

Part no. A2095452301

Mercedes W209 Convertible Fuse Box Rear SAM Module Control Unit A2095452301

Product currently unavailable

Part no. F40HQ012GKB

BMW E90 E91 E92 Radio Fan Adapter Cooling Control Unit Module F40HQ012GKB

Product currently unavailable

Part no. A2035454201

Mercedes W203 C209 SAM Control Unit Module Fuse Box Front A2035454201

Product currently unavailable

Part no. 8800147

BMW F20 F21 F22 F30 F31 LCI Head Unit Radio Media Player Navigation 8800147

Product currently unavailable

Part no. 7809000-4

BMW E60 E87 E90 120d 320d 520d N47 ECU Kit DDE 7809000 Control Unit CAS3 + Key

Product currently unavailable

Part no. 6C0941824D

Audi A1 S1 8X Fuse Relay Box Module Unit 6C0941824D

Product currently unavailable

Part no. 9118729-2

BMW 5 Series E60 Body Gateway Module KGM HIGH LEAR 9118729

Product currently unavailable

Part no. A2123200558

Mercedes W212 Valve Block AMG Air Suspension Control Unit Module A2123200558

Product currently unavailable

Part no. 8589145-10

BMW F20 LCI 116d B37 Engine Control Unit Module ECU DDE 8589145 Manual

Product currently unavailable

Part no. 5C0035680C

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

Product currently unavailable

Part no. 7580279-2

BMW E87 LCI E90 E92 120i 320i N43 170HP ECU Kit DME 7580279 CAS3 + Key Manual

Product currently unavailable

Part no. 9166708-5

BMW Z4 E89 Cabrio Xenon Footwell Light Control Module LCM PL2 FRM II 9166708

Product currently unavailable

Part no. 9194064-2

On-Board Monitor BMW X5 E70 X6 E71 Sat Nav System Screen 8,8" 9194064

Product currently unavailable

Part no. 5A56078

Mini F55 F56 Ignition Lock Barrel Key Unit 5A56078

Product currently unavailable

Part no. 7791335

Mini R50 One D W17 1.4 Diesel Engine Starter Motor 7791335

Product currently unavailable

Part no. 8T2035195C

Audi A4 B8 Radio Player Symphony Head Unit CD Player Stereo 8T2035195C

Product currently unavailable

Part no. 8589145-5

BMW F20 120d F30 320d LCI B47 190HP Engine Unit ECU Kit DDE 8589145 Key FEM

Product currently unavailable

Part no. A9068203926

Mercedes Sprinter W906 Door Module Front Right Control Unit A9068203926

Product currently unavailable

Part no. A9079002404

Mercedes Sprinter W907 W910 Electronic Ignition Module Control Unit A9079002404

Product currently unavailable

Part no. A6421506100-1

Mercedes W164 ML320 CDI 4-Matic OM642.920 Engine ECU Kit A6421506100 Key Lock

Product currently unavailable

Part no. 7401878

BMW F30 F31 LCI Front LED Headlight Vertical Actuator Left Right N/O/S 7401878

Product currently unavailable

Part no. A2038273842

Mercedes W203 CD Media Player Radio Audio 20 Phone Head Unit A2038273842

Product currently unavailable

Part no. BK2T-14301-AC

Ford Transit Custom Mk8 Negative Minus Battery Terminal Cable BK2T-14301-AC

Product currently unavailable

Part no. rhd-A1644405736

Mercedes-Benz M-Class ML W164 Dashboard Wiring Cable Harness A1644405736

Product currently unavailable

Part no. 8K0907064BP

Audi S5 8T Body Comfort Control BCM Supply Module Unit ECU 8K0907064BP

Product currently unavailable

Part no. 9224598

BMW 3 Series E92 Max Brose Footwell Light Module Control Unit ECU FRM3R 9224598

Product currently unavailable

...

Showing 14653-14751 of 30456 products