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

Ford Transit Custom Battery Cable Positive Wiring Harness Loom KK3T-10C652-AC

Product currently unavailable

Part no. 4KE907468M

Audi A6 C8 Gateway Interface Control Unit Module ECU 4KE907468M

Product currently unavailable

Part no. 4M0959107B

Audi A4 B9 Boot Tailgate Control Module Unit 4M0959107B

Product currently unavailable

Part no. CF6N-18C815-HP

Land Rover Discovery 4 L319 CD Radio Sat Nav Unit Module CF6N-18C815-HP

Product currently unavailable

Part no. 9206973

BMW E60 E90 E91 X5 E70 Mini R56 FBAS Video Control Unit TV Tuner Module 9206973

Product currently unavailable

Part no. 4H0907063DB

Audi A5 8T Body Control Comfort Unit Convenience Module BCM1 ECU 4H0907063DB

Product currently unavailable

Part no. A2129009025

Mercedes W212 Fuse Box Front Relay Control Unit Module SAM A2129009025

Product currently unavailable

Part no. 8802923

Mini Cooper F54 F55 F56 F57 Radio Navigation Head Unit Control Module 8802923

Product currently unavailable

Part no. 8W0035192G

Audi A4 B9 Navigation Radio CD Player Head Unit Central Computer 8W0035192G

Product currently unavailable

Part no. 7533651-5

BMW E60 525i M54 192HP ECU Engine Control Unit Module DME 7533651 Automatic

Product currently unavailable

Part no. A2239052400

Mercedes W177 W223 W247 Crash Impact Deployment Sensor Unit A2239052400

Product currently unavailable

Part no. A2215400901

Parktronic Module Mercedes W221 Parking Aid Sensors Control Unit A2215400901

Product currently unavailable

Part no. 1388911-3

BMW E36 E38 E85 Mini R52 R57 5x Change-Over Contact Relay Violet Set 1388911

Product currently unavailable

Part no. 7002532

BMW E46 E64 Driver Side Seat Wiring Loom Electric Harness 7002532

Product currently unavailable

Part no. 6827070

Mini Countryman R60 Footwell Light Module FRM3R PL3 ECU 6827070

Product currently unavailable

Part no. AM5T-18C815-PF

Ford Fiesta Mk7 CD Player Radio Head Unit Multimedia AM5T-18C815-PF

Product currently unavailable

Part no. A1695408033

Mercedes-Benz A W169 Front Driver's Side Door Wiring Loom Harness A1695408033

Product currently unavailable

Part no. 504121602

Iveco Daily 2.3 Diesel Engine F1AE0481 Unit Module ECU Manual 504121602

Product currently unavailable

Part no. CK52611D32AB

Range Rover L405 Front Seat Air Module Unit Right O/S CK52611D32AB

Product currently unavailable

Mercedes W204 Display Screen Multifunction Navigation Dashboard A1729004004

-40%

Part no. A1729004004

Mercedes W204 Display Screen Multifunction Navigation Dashboard A1729004004

Product currently unavailable

Part no. 7640015-3

BMW E81 E82 E88 N43 143HP Engine Control Unit ECU DME 7640015 Automatic

Product currently unavailable

Part no. AH42-15K866-BF

Range Rover L322 PDC Parking Sensor Module Control Unit AH42-15K866-BF

Product currently unavailable

Part no. 7610009-3

Mini Cooper S R56 N14 1.6 174HP ECU DME Kit CAS 3 Key 7610009 Manual Gearbox

Product currently unavailable

Part no. 8605894

Mini Cooper S R55 R56 LCI Engine Wiring Injection Loom Harness N18 8605894

Product currently unavailable

Part no. 6Q0909605A

Volkswagen Golf IV Mk4 Air Module ECU Control Unit 6Q0909605A

Product currently unavailable

Part no. 7823973-1

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 7823973 CAS3 + Key

Product currently unavailable

Part no. 8488548

High Voltage Inverter BMW i3 I01 Hybrid 120Ah Rex Electrical Machine 8488548

Product currently unavailable

Part no. 8506951-1

BMW E60 LCI E90 325d 525d M57N2 ECU Kit Basic Control Unit DDE 8506951 CAS3 Key

Product currently unavailable

Part no. H1BT-18C815-VN

Ford Fiesta MK8 Radio Head Unit Sat Nav Module H1BT-18C815-VN

Product currently unavailable

Part no. A0141541302-1

Mercedes W164 W221 OM642 Diesel Engine Alternator Generator 14V 220A A0141541302

Product currently unavailable

Part no. 03E906023AL

Volkswagen Polo 6R 1.2 MPI CGPB 60HP Engine Control ECU 03E906023AL Manual

Product currently unavailable

Part no. 7L6971095G

VW Volkswagen Touareg 7L Front Bumper PDC Parking Sensor Wire Harness 7L6971095G

Product currently unavailable

Parking Module Mercedes W203 C209 Parktronic Control Unit A2035454932

-5%

Part no. A2035454932

Parking Module Mercedes W203 C209 Parktronic Control Unit A2035454932

Product currently unavailable

Part no. LR084460

Land Rover Discovery Sport L550 Starter Motor 2.0 Diesel LR084460 GJ32-11001-BD

Product currently unavailable

Part no. A0285454032

Mercedes W203 W210 W220 DIesel Glow Plug Relay Module Unit A0285454032

Product currently unavailable

Part no. 8510643-1

BMW F10 F11 530d N57 245HP Engine Control ECU Kit Module DDE 8510643 CAS4 Key

Product currently unavailable

Part no. 8V0907357A

Audi A3 8V Headlight Range Cornering Adjustment Control Module 8V0907357A

Product currently unavailable

Part no. A2074407613

Mercedes-Benz E-Class W207 Cabrio A207 Centre Console Divider Wiring Harness

Product currently unavailable

Part no. A1679000500

Mercedes W177 W247 Driver's Seat Heating Control Unit Module ECU A1679000500

Product currently unavailable

Part no. A6519002600-1

Mercedes W906 OM651.957 Diesel Engine ECU Kit Unit A6519002600 Key Lock Manual

Product currently unavailable

Part no. 4G5035223B

Audi A7 4G Bose Sound System Amplifier Control Unit Modul 4G5035223B

Product currently unavailable

Part no. 8576333-2

Engine Unit ECU BMW F20 F30 F32 120dX 320dX 420dX N47N 184HP DDE 8576333 Manual

Product currently unavailable

Part no. 8W1959593J

Audi Q5 FY Door Control Module Unit ECU Front Driver's Side 8W1959593J

Product currently unavailable

Part no. 03L906018JM-1

Audi Q5 8R 2.0 TDI CGLC Quattro 177HP Engine Control ECU Kit 03L906018JM Manual

Product currently unavailable

Mercedes W212 Media Interface Control Module Unit ECU A2048708626

-5%

Part no. A2048708626

Mercedes W212 Media Interface Control Module Unit ECU A2048708626

Product currently unavailable

Part no. 8617551

BMW F20 F22 F30 F31 Petrol N20 ECU DME Engine Control Unit 8617551 Automatic

Product currently unavailable

Part no. A6519003203-3

Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU Kit A6519003203 Manual

Product currently unavailable

Part no. 2G0035456

Seat Ibiza V Audio Stereo Amplifier Control Module 2G0035456

Product currently unavailable

Part no. 8E0035192T-2

Audi A4 S4 RS4 B7 Sat Nav Radio Audio Head Unit CD Multimedia Player 8E0035192T

Product currently unavailable

Part no. 8506444-2

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8506444 CAS3 + Key

Product currently unavailable

Part no. A6519003203-4

Mercedes W906 313 CDI OM651.955 129HP Diesel Engine ECU A6519003203 Manual

Product currently unavailable

Part no. RU5T-14H474-FAL

Volkswagen VW Amarok Mk2 Gateway Module Control Unit RU5T-14H474-FAL

Product currently unavailable

Part no. A0325454432

Mercedes W163 Automatic Gearbox Control Module ECU 112970 3.7 Petrol A0325454432

Product currently unavailable

Part no. A2038700026

Mercedes W203 ECU Control Unit Crash Impact Sensor Air Module A2038700026

Product currently unavailable

Part no. 9122274

BMW E60 E61 LCI Front Cables Set Wiring PDC Parking Sensor Bumper 9122274

Product currently unavailable

Part no. A0009053303

Radar Sensor Mercedes W204 C117 Rear Blind Spot Right left N/O/S A0009053303

Product currently unavailable

Part no. 3G0971690

Volkswagen Passat B8 3G Door Wiring Loom Harness Rear Right O/S 3G0971690

Product currently unavailable

Part no. JK2T-14B321-AJ

Ford Transit Custom Airbag Control Module Crash Data Reset JK2T-14B321-AJ

Product currently unavailable

Part no. A1719000000

Mercedes SLK R171 Roof Module Convertible Folding Top Control Unit A1719000000

Product currently unavailable

Part no. 6907435

BMW E46 Touring Positive Battery Cable Plus Pole Lead Loom 6907435

Product currently unavailable

Part no. 5Q0907530D

Volkswagen VW Golf Mk7 Gateway Control Unit Module 5Q0907530D

Product currently unavailable

Part no. 9153778

BMW E87 LCI ECU Light Module Footwell NSW PL2 FRM II Lear 9153778

Product currently unavailable

Part no. 8655341

BMW X1 F48 Differential Lock Module Rear Axle Control Unit ECU 8655341

Product currently unavailable

Part no. 7796571-2

BMW X3 Series E83 2.0d 150HP Engine ECU Kit DDE EWS3 Key 7796571 Manual

Product currently unavailable

Part no. 7803373-10

BMW E87 E90 E60 120d 320d 520d M47N2 163HP Engine Unit ECU DDE 7803373 Manual

Product currently unavailable

Part no. A2038703589

Mercedes W203 CD Player Radio Audio Sat Nav Navigation A2038703589

Product currently unavailable

Part no. 04L903021G

Audi Q2 GA Diesel Engine Alternator Generator Assembly Bosch 04L903024T

Product currently unavailable

Part no. 9145162

BMW E93 Hifi System Amplifier Sound System Amp 9145162

Product currently unavailable

Part no. A2129005622

Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622

Product currently unavailable

Part no. 8K0907401

Audi A5 8T 3.0 TDI CAPA Quattro 239HP Engine Control ECU 8K0907401 Manual

Product currently unavailable

Part no. 5QA919294G

Volkswagen Golf Mk7 PDC Parking Assist Distance Module Control Unit 5QA919294G

Product currently unavailable

Part no. FR3B-14E073-R30XD

Ford Mustang GT Mk6 Front Door Light Wiring Harness Left N/S FR3B-14E073-R30XD

Product currently unavailable

Part no. 06K907425B-25

Volkswagen Polo GTI Mk5 1.8 TSI DAJB 192HP Engine ECU Kit 06K907425B BCM + Key

Product currently unavailable

Mercedes W204 W212 W251 Starter Motor 642872 Diesel Engine Starter A0061519801

-40%

Part no. A0061519801

Mercedes W204 W212 W251 Starter Motor 642872 Diesel Engine Starter A0061519801

Product currently unavailable

Part no. A2048708926

Mercedes S204 Bootlid Control Unit Trunk Lid Module A2048708926

Product currently unavailable

Part no. 5QA919283H

Seat Arona KJ7 Park Parking Assist PDC Distance Control Unit Module 5QA919283H

Product currently unavailable

Part no. 4L0971104K

Audi Q7 4L Rear Bumper Parking Sensor Wiring Harness Loom Wire 4L0971104K

Product currently unavailable

Part no. 9292656

BMW F20 F21 F22 F30 F31 F32 F36 Front Electronic Module Control Unit FEM 9292656

Product currently unavailable

Part no. 8K0907637D

Yaw Sensor Audi A4 B8 A5 8T ESP Rotation Rate Unit Module 8K0907637D

Product currently unavailable

Part no. 8585375-1

BMW F06 Gran Coupe 640d N57Z 313HP Engine Control ECU Kit 8585375 Automatic

Product currently unavailable

Part no. 8V2112A650KE

Ford Fiesta MK7 1.6 TDCI Diesel Engine Control Unit ECU 8V2112A650KE Manual

Product currently unavailable

Part no. A0009058802

Mercedes W166 W205 W212 Rear Bumper Blind Spot Radar Sensor Module A0009058802

Product currently unavailable

Part no. 7622962-1

BMW F01 F02 F03 N74 760Li 544HP Engine Dual Control ECU Kit 7622962 Automatic

Product currently unavailable

Part no. 99650415100

Porsche Boxster 986 Battery Tray Lower Covering Panel Cap 99650415100

Product currently unavailable

Part no. A6421502277-2

Mercedes ML W164 280CDI 4-Matic OM642 Engine Control ECU Kit A6421502277 Automat

Product currently unavailable

Part no. 9203081-1

BMW E61 LCI Light Control Unit Module LEAR LM II E6X LWR 9203081

Product currently unavailable

Part no. A2749000700-1

Mercedes W204 C180 BlueEFFICIENCY M274.910 Engine ECU Kit A2749000700 Key

Product currently unavailable

Part no. 9286940

BMW 7 Series F01 LCI ECU Body Control Module Junction Box JBBFEIII V5 9286940

Product currently unavailable

Part no. 079903018X

Audi A4 B7 4.2 FSI V8 Petrol Engine Alternator Generator 079903018X

Product currently unavailable

Part no. 8506566-8

BMW E90 E91 E92 LCI 320d N47N 163HP Engine Unit ECU Kit DDE 8506566 Manual

Product currently unavailable

Part no. A4475460064

Mercedes W447 Fuse Box Module Cover Trim Trunk A4475460064

Product currently unavailable

Part no. 7PP959760E

Porsche Cayenne 92A Seat Control Module Unit ECU 7PP959760E

Product currently unavailable

Part no. 7805098

BMW Mini Cooper One D R55 R56 Engine Starter Motor Diesel Valeo 7805098

Product currently unavailable

Part no. BV6N-14A073-EU

Ford Focus Mk3 BCM Body Control Module Fuse Box Electrical Unit BV6N-14A073-EU

Product currently unavailable

Part no. 9358314

Mini Cooper F57 Front Door Wiring Harness Mini Excitement Package N/O/S 9358314

Product currently unavailable

Part no. A1669007616

Amplifier DAB Mercedes W176 W204 W212 Control Unit Module ECU A1669007616

Product currently unavailable

Part no. FT11-13W029-EB-2

Ford Transit Connect Headlight Lamp Front Right O/S Harness Looom FT11-13W029-BA

Product currently unavailable

Part no. 6933866

TV Function Module BMW E65 E66 E67 Video Control Unit Tuner 6933866

Product currently unavailable

Part no. 6976466

BMW E64 Air Module ECU Control Unit Centre Vehicle Sensor 6976466

Product currently unavailable

...

Showing 18217-18315 of 21307 products