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

Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023L

€47.95

Part no. BM5T-18C815-PG

Ford Transit Mk8 Radio CD Multimedia Player Navigation Head Unit BM5T-18C815-PG

€70.95

Part no. 8610006-3

Mini Cooper R56 LCI R61 N18 1.6 184HP Engine Control ECU DME 8610006 Automatic

€427.95

Part no. 31314503AF

Volvo V40 Mk3 Rear Parking Sensor Wiring Harness 850002405

€51.95

Part no. A2215401633

Mercedes W221 Door Harness Cable Loom Wire Wiring Rear Left N/S A2215401633

€42.95

Part no. 6952477

BMW 5 Series E60 E61 Centre Console Switch Centre DTC PDC 6952477

€23.95

Part no. 6809491

Mini Cabrio F57 Door Harness Wire Passenger Co-Driver's Side 9389225 6809491

€47.95

Part no. AV4T-14301-AB

Ford Kuga C394 Negative Battery Wiring Loom Cable Wire Harness AV4T-14301-AB

€23.95

Part no. YQE500290

Range Rover L322 Engine Bay Fuse Relay Box Unit Module YQE500290

€23.95

Part no. 5Q0959392E

Audi A3 8V Front Door Module Unit ECU Left N/S Passenger Side 5Q0959392E

€23.95

Part no. 8T0971365H

Audi A5 8F Seat Cable Front Wiring Loom Harness Left Right N/O/S 8T0971365H

€23.95

Part no. 4G5035225

Audi A6 C7 Aerial Roof Booster Antenna Amplifier AMP 4G5035225

€23.95

Part no. 1517138

Ford Fiesta St Mk5 Starter Mottor Battery Cable Wire Loom Harness 6S6Y-14300-MF

€94.95

Part no. A1729060005

Mercedes R172 Rear SAM Fuse Relay Box A1729060005

€51.95

Part no. 8V5945096A-2

Audi A3 8V Saloon Rear Tail Light Wiring Harness Cable LED Right O/S 8V5945096A

€23.95

Part no. 9210860

BMW X3 F25 Rear Fuse Box Power Distribution Control Unit Box 9210860

€23.95

Part no. A2135452840

Mercedes W213 ECU Bracket Control Unit Module Holder Mount A2135452840

€23.95

Part no. GU5T-14B192-GA

Ford Transit Mk8 Relay High Power 4-Pin Black FoMoCo GU5T-14B192-GA 4RA933714

€23.95

Part no. A2045455640

Mercedes Benz C E W204 W207 Control Unit Module SAM Bracket Mount A2045455640

€23.95

Part no. 2Q0915181A

Volkswagen Polo Mk6 GTI Negative Battery Terminal Cable Lead 2Q0915181A

€42.95

Part no. A2218705885

Mercedes W221 Night Vision System Camera Module Control Unit A2218705885

€23.95

Part no. 3Q0959354

Seat Leon Mk3 Door Crash Impact Sensor Front Left Right N/O/S 3Q0959354

€23.95

Part no. 5M5T-14B192-EA-1

Ford Transit Custom Relay 4-Pin Black 12V 40A FOMOCO Set X2 5M5T-14B192-EA

€23.95

Part no. 191906383C

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 191906383C

€23.95

Part no. MB3T-14N143-MC

VW Amarok Mk2 Negative Earth Battery Wiring Loom Cable Connector MB3T-14N143-MC

€32.95

Part no. 8492458-2

BMW F20 F21 LCI Headlight LED Black Line Lamp Right O/S Harness Loom 8739574

€23.95

Part no. 04L907282

VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 511 9 Pins 04L907282

€23.95

Part no. 06L971627T

Audi A4 B9 2.0 CVKB Petrol Fuel Injectors Wiring Harness Loom 06L971627K

€23.95

Part no. 4K0971238

Audi A6 C8 Alternator Earth Line Ground Wiring Harness Cable 4K0971238

€32.95

Part no. BH22-10E887-BE

Land Rover Sport L320 Media Player Multimedia Navigation Screen BH22-10E887-BE

€94.95

Part no. DK62-14300-AF

Range Rover Sport L494 Positive Battery Cable Wiring Harness DK62-14300-AF

€23.95

Part no. C1BA-12B684-DB

Ford Fiesta Mk7 Engine ECU Control 1.6 EcoBoost 182HP C1BA-12B684-EB Manual

€165.95

Part no. A2198203426

Mercedes C219 Rear Door Control Module Unit Left N/S A2198203426

€28.95

Part no. 6941591

BMW E60 Headlight Control Module Adaptive Socket Housing Module Unit 6941591

€23.95

Part no. 3W83-12B522-AB

Jaguar XK8 X100 Control Unit Module Mounting Bracket Carrier 3W83-12B522-AB

€23.95

Part no. 8621486

BMW F20 F21 LCI F36 F87 M2 N55 Cable Alternator Starter Base B Wiring 8621486

€28.95

Part no. A1729003406

Mercedes SLK R172 Roadster Soft Top Folding Roof Control Module A1729003406

€80.95

Part no. SDC-30C

Mercedes Front View Camera Unit Innovative Safe System ISS 12V SDC-30C

€66.95

Part no. 7801158

BMW 3 5 X5 Series E60 N E70 E90 F30 Exhaust Lambda Probe Oxygen Sensor 7801158

€23.95

Part no. 4H0919604H-1

Audi A8L 4H Navigation Dashboard Display Hud Screen 4H0919604H

€165.95

Part no. FH22-14B006-AB

Range Rover Evoque L538 Air Module Impact Sensor Control Unit FH22-14B006-AB

€23.95

Part no. LK62-9H307-CA

Range Rover Sport L494 Fuel Tank Pump Sender Unit D300 MHEV LK62-9H307-CA

€51.95

Part no. 6M21-13A603-EB-2

Ford Transit Mk7 Rear Lamp Left N/S Tail Light Cable Wire Harness 6M21-13A603-EB

€23.95

Part no. 6970086

BMW 5 6 Series E60 E61 E63 LCI Cable Set Start / Stop Switch Wiring Loom 6970087

€23.95

Part no. DK52-14F041-AC

Range Rover L405 Fuse Box Body Control Module Unit DK52-14F041-AC

€165.95

Part no. A2129003922

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003922

€42.95

Part no. A2125407313

Mercedes W212 Front Bumper PDC Wiring Loom Harness A2125407313

€70.95

Part no. 3420783

BMW X3 E83 Light Control Unit Module LEAR LWR ECE 3420783

€75.95

Part no. A1645403130

Mercedes W164 Positive Battery Cable Wiring A1645403130

€170.95

Part no. K8D2-9E729-BB

Land Range Rover Evoque L551 Radar Sensor Bracket Front Bumper K8D2-9E729-BB

€51.95

Part no. 82A035225

Audi A1 S1 GB Radio Aerial Antenna Amplifier Upper Left N/S 82A035225

€23.95

Part no. 8H1971765

Audi A4 B7 Cabriolet Wing Mirror Switch Wiring Loom Cable 8H1971765

€23.95

Part no. A2038204864-1

Mercedes CL203 Rear Tail Light Lamp Wiring Cable Harness Right O/S A2038204864

€23.95

Part no. 6886210

PDC Module BMW F20 F21 F22 F23 Parktronic Parking Assist Control Module 6886210

€47.95

Part no. 6895660

BMW G20 G21 ABS Rotational Wheel Speed Sensor Front Left Right N/O/S DSC 6895660

€32.95

Part no. 6929701

BMW 7 Series E65 E66 Alarm System Ultra Sonic Module 65756929701 6929701

€23.95

Part no. 03L906018MN

Audi Q5 8R 2.0 TDI 143HP Quattro Engine Control Module ECU 03L906018MN Manual

€146.95

Part no. A0018276804

Mercedes W207 Connection Media Interface Cable iPod Wiring Lead A0018276804

€23.95

Part no. 8K0907064JB

Audi A4 B8 A5 8T Body Control Module Unit ECU Controller 8K0907064JB

€28.95

Part no. 05E907309CB

Audi Q2 GA 35 TFSI 1.5 DXDB Engine ECU Kit Ignition + Key 05E907309CB Manual

€332.95

Part no. 6798708

BMW X5 E70 LCI X6 E71 Distronic Radar Sensor Control Module Unit 6798708

€531.95

Part no. 7239175-1

BMW F30 F80 M3 Battery Cover Trunk Trim Panel Right Boot 7239175

€23.95

Part no. 1746861

Ford Focus Mk3 Battery Starter Wiring Loom 1.6 Diesel AV6T-14A280-GAF 1746861

€23.95

Part no. 7F6N-18C815-AB

Jaguar XF X250 Radio CD Player Stereo Control ECU Head Unit 7F6N-18C815-AB

€23.95

Part no. 8U0971035AA

Audi Q3 8U Door Loom Wiring Harness Cable Front Right O/S 8U0971035AA

€37.95

Part no. A0009001704

Fuel Pump Module Mercedes W176 W204 C207 W212 W246 Control Unit ECU A0009001704

€80.95

Part no. 6989207

BMW X3 E60 E61 E83 PDC Parking Sensor Ultrasonic Titanium Grey A36

€32.95

Part no. 9131642

BMW E87 E90 E91 E92 Front Seat Heating Wiring Loom Harness Cable 9131642

€23.95

Part no. 4N0035502D

Audi S3 8Y Wireless Charging Station Phone Control Module Unit 4N0035502D

€32.95

Part no. FK72-15K602-BA-1

Jaguar Xf X260 Radio Remote Control Receiver Module Unit 434 MHz FK72-15K602-BA

€23.95

Part no. 7621178-14

BMW 3 E92 lci 318i 2.0 142HP Engine Control Unit Key ECU DME Manual 7621178

€113.95

Part no. 554730H010B0

Toyota Aygo B1 Dashboard Panel Speaker Cover Right O/S Side 554730H010B0

€23.95

Part no. AM5T-18C815-PD

Ford Fiesta Mk7 Radio CD Player Navigation Head Unit Module AM5T-18C815-PD

€47.95

Part no. DM5T-18B955-BC

Ford Focus Mk3 Radio Display Screen Stereo Head Unit DM5T-18B955-BC

€32.95

Part no. 6875997

ICM Control Unit BMW F01 F02 LCI F06 F10 F11 F13 ECU Module 6875997

€32.95

Part no. 8F0971035H

Audi A5 8F Cabriolet Door Card Wiring Harness Front Driver's Side 8F0971035H

€28.95

Part no. 8508208-1

BMW F10 F11 520d 530d N47N N57 E-Box Control Unit Box 8508208

€28.95

Part no. 8V4T-18C939-LD

Ford Kuga MK1 Sony Radio CD Head Unit 8V4T-18C939-LD

€123.95

Part no. 6900583

BMW E65 E66 Power Distribution Box 6900583

€23.95

Part no. XQK500103

Land Rover Discovery 3 L319 Radio Amplifier Harman Kardon Logic 7 XQK500103

€89.95

Part no. 4G5945095C-2

Audi A6 C7 Rear Tail Light Lamp LED Wiring Harness Cable Left N/S 4G5945095C

€23.95

Part no. F2GT-14C676-AA

Ford Mondeo Mk5 Air Unit Module Crash Impact Sensor F2GT-14C676-AA

€23.95

Part no. HK62-14687-EB

Range Rover Sport L494 Door Wiring Loom Harness Rear Left N/S HK62-14687-EB

€28.95

Part no. R8E2-14D620-AA

Range Rover Evoque L551 Rear Door Control Module ECU Drivers Side R8E2-14D620-AA

€85.95

Part no. 9399997

BMW X5 F15 LED Light Lamp Control Module 9399997

€23.95

Part no. 1Z0197121DL

Skoda Octavia Mk2 Front Door Wiring Harness Cable Passenger Side 1Z0197121DL

€28.95

Part no. 1690663980

Vauxhall Movano C Wiring Harness Cable Loom 1690663980

€42.95

Part no. 8T0971030S

Audi A5 8T Front Door Wiring Loom Harness Cable Passenger Side 8T0971030S

€23.95

Part no. 8X0971035BL

Audi A1 S1 8X GB Front Door Wiring Loom Harness Cable Driver's Side 8X0971035BL

€23.95

Part no. A2218204189

Mercedes W221 Antenna Amplifier Aerial A2218204189

€23.95

Part no. 5F4035225B

Seat Leon Mk3 Antenna Amplifier Module FM Right O/S Aerial Booster 5F4035225B

€32.95

Part no. HG9T-14B560-BB

Ford Mondeo Mk5 Centre Console Wiring Cable Adapter Loom HG9T-14B560-BB

€28.95

Part no. 9291958

BMW F20 Front Door Wiring Cable Loom Harness Driver's Side 9291958

€28.95

Part no. BK2T-10N725-AG

Ford Transit Custom Mk8 Battery Box Lid Tray Cover Panel Trim LK4T-10N725-BA

€37.95

Part no. 1T0906216

Volkswagen Caddy 2C Engine Control Unit Support ECU Holder 1.6 TDI 1T0906216

€23.95

Part no. 8R0959655C

Audi Q5 8R Air Unit Control Module ECU 2.0 TDI Diesel AQ5 CAHA 8R0959655C

€32.95

Part no. 6929557

Air Module BMW E65 E66 Driver's Seat Sensor Control Unit 6929557

€23.95

Part no. 5H0035456A

VW Golf R CD1 Lamando Sound Amplifier Audio System Module Unit 5H0035456A

€184.95

Part no. C2Z2124

Jaguar XF X250 Rear Bumper Parking Sensor Harness Wire Wiring Loom C2Z2124

€23.95

...

Showing 9901-9999 of 22739 products