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

BMW F70 F74 F78 G60 G61 G68 G70 X2 U10 X1 U11 Rain Sensor 5A9CA29

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9157155

BMW 5 6 Series E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9157155

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0937615A

Volkswagen Polo Mk6 Fuse Relay Box Power Supply Unit 2Q0937615A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2049012604

Mercedes W204 Parking Control Unit Module ECU A2049012604

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 46355551

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

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135409616-1

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 57A971694A

Skoda Karoq NU7 Rear Door Wiring Loom Harness Cable Right O/S 57A971694A

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0955557A

Audi A6 C6 Door Crash Impact Sensor Front Left Right N/O/S 4F0955557A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8734161

BMW G20 Power Distribution Rear Fuse Relay Box 330e B48X B48B20A 8734161

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0803123A

Audi Q5 8R Battery Hold Down Clamping Strip 8R0803123A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-14B144-BA

Ford Transit Mk8 Battery Fuse Box Holder Housing 2.2 TDCi Diesel BK2T-14B144-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7212594-3

BMW F10 F11 F25 Hands Free Microphone Grey 7212594

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6429004201

Mercedes W221 BlueTec Exhaust Gas Aftertreatment Control Unit Module A6429004201

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911024A

Volkswagen Passat B7 Engine Starter Motor Actuator Starter 0AM911024A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 09D927750AK

Porsche Cayenne 955 9PA Automatic Gearbox Module Control Unit ECU 09D927750AK

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1664408836

Mercedes W166 Dashboard Cockpit Cable Electric Wiring Harness Loom A1664408836

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971104

Audi A5 8T Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919283E

Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5CH971120E

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V51-15K600-EJ

Ford Fiesta Mk7 Body Control Module BCM Controller Unit ECU 8V51-15K600-EJ

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. AV11-15K600-EH

Ford Fiesta Mk7 Door Lock Alarm Module Unit Control Panel Box AV11-15K600-EH

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CF6N-18C815-HA

Range Rover Evoque L538 Radio CD Player Sat Nav Head Unit CF6N-18C815-HA

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055408987

Mercedes W205 Exhaust Wiring Harness Cable A2055408987

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6942547-1

BMW E87 E90 Front Seat Wire Harness Loom Electric Line Passenger Side 6942547

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6878191

Air Module BMW F01 F02 LCI F10 F11 F13 ECU ICM Control Unit 6878191

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2115458601-2

Mercedes C219 Rear SAM Module Fuse Box Relay Control Unit A2115458601

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6902265

BMW E65 E66 E67 Compact Base Support System Rear Black 6902265

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4145401130

Mercedes Vaneo W414 Starter Wiring Harness Battery Ground Cable A4145401130

€37.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2059001611

Mercedes W205 Door Module Front Right O/S Control Unit ECU A2059001611

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8626760

BMW F20 F22 F30 F31 Engine Wiring Loom Harness Cable B38 Petrol 8626760

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2515400524

Mercedes W251 Fuse Relay Electrical Box Housing Cover A2515400524

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 4L0035225AJ

Audi Q7 4L Radio Aerial Antenna Amplifier AM/FM 4L0035225AJ

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 9337881

BMW 1 3 4 F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9337881

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1698100212

Mercedes W169 W245 Electrical Wiring Sun Visor Wiring Loom Harness A1698100212

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 10 – 13

If paid before 14:00

Part no. A2059007339

Mercedes W205 BCM Body Control Module Unit ECU A2059007339

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A2518202064-2

Mercedes W251 Tail Light Lamp Side Panel Harness Loom Rear Right O/S A2518202064

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JT7618C815HD

Ford Transit Courier Radio Stereo Control Module Plater Head Unit JT76-18C815-HD

€137.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7796127

BMW X5 X6 Series E70 E71 Diesel Battery Cable Starter-Base B+ 7796127

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7537612-1

BMW X5 E53 E60 E81 E87 E90 Engine Vacuum Control Electric Valve 7537612

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E0035874A

Skoda Octavia RS 5E Radio Player SAT NAV Bluetooth Head Unit Module 5E0035874A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G5971693C

Audi A6 C7 4G Door Card Harness Loom Cable Wiring Rear Left N/S 4G5971693C

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0971349S

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

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. ZX5T-15K601-DH

Ford Transit Custom Button Remote Flip Key Fob Unit ZX5T-15K601-DH

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8918305030

Toyota Avensis T270 Mk3 Yaw Rate ESP Sensor Module 2.2 Diesel 8918305030

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8612002520

Toyota Auris Mk1 E15 Stereo Radio CD Player Head Unit Control Module 86120-02520

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2H0867485A

Volkswagen Amarok 2H Roof Headliner Trim Storage Alarm Module Unit 2H0867485A

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-14F441-LE

Range Rover Sport L494 BCM Body Control Module Unit ECU CPLA-14F441-LE

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. LR029719-1

Land Range Rover Sport L320 Front Door Speaker Left Right N/O/S BH22-18808-FA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 281000L052

Toyota Hilux Mk7 Starter Motor DENSO 12V 2.5 Diesel TG428000-2632 28100-0L052

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5F0907159E

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2751445

Mini Cooper One R56 R55 R57 R58 LCi Retaining plate fuse box SPEG 2751445

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0937084BS

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

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8601248

Earth Cable BMW i3 I01 Hybrid Electric Negative High Voltage Battery 8601248

€23.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 9231180

BMW F22 F30 F32 Antenna Amplifier AM FM Booster AMP 9231180

€28.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. BK3T-11000-CB

Starter Ford Transit MK8 Custom V363 2,2 Tdci Starter Motor BK3T-11000-CB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135406631

Mercedes W213 Rear Door Wiring Harness Cable Left N/S A2135406631

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0010006J

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QC971566

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 09D927601

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

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9273597

BMW F01 F10 F11 Audio Player Rear DVD Background ECE US Head Unit 9273597

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0937517AL

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

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6960221

Airbag Module BMW E65 E66 Sensor B-pillar Left N/S Control Unit Air Bag 6960221

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0937311

Volkswagen Passat B7 Sharan 7N Electrical Fuse Relay Box 7N0937311

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0915418A

Audi A3 S3 8P VW Volkswagen Golf Mk5 HV Battery Jacket Cover Housing 1K0915418A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7533651-8

BMW E60 530i M54 231HP Engine ECU Kit Unit DME 7533651 + CAS2 + Key Automatic

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. J8A2-14D375-AA

Range Rover Velar L560 Centre Console Light Wiring Harness Cable J8A2-14D375-AA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9265300

BMW 1 2 Series F20 F21 F22 F23 LCi Headlight Switch Control Element Light

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469002318-2

Mercedes W176 W246 Radio Head Unit Media Player Navigation A2469002318

€327.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV6T-14B532-DA

Ford Kuga C520 Rear Door Module Control Unit Left Right N/O/S CV6T-14B532-DA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1ET14B321CC

Ford Focus Mk3 Air Module ECU Control Unit Controller Sensor F1ET-14B321-CC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2Q0915343C-1

Volkswagen Polo Mk6 AW Battery Tray Power Distribution Unit 2Q0915343C

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6916565

BMW 5 X5 Series E38 E39 E53 Hands-free Electronics Charging Module MOTOROLA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L5971121A

Porsche Cayenne 9PA Front Door Wiring Harness Loom Cable 7L5971121A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035BA

Audi A5 8T Coupe Front Driver Side Door Wiring Harness Right O/S 8T0971035BA

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0035554B

Skoda Octavia 1Z Media Interface Cable Connector Wire Adapter Ipod 5N0035554B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7G9N-18C815-TA

Land Rover Freelander 2 L359 Stereo Radio CD Player Head Unit 7G9N-18C815-TA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9W83-10E887-CB

Jaguar XF X250 Sat Nav Navigation DVD Disc Drive Head Unit 9W83-10E887-CB

€37.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. A1775402711

Mercedes-Benz W177 Rear Door Wiring Loom Wire Harness Left N/S A1775402711

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8579482-4

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8579482 + Key + FEM Manual

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465404309

Mercedes W176 W246 Passenger's Seat Wiring Loom Harness Cabling A2465404514

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DS73-14G275-AB

Ford Mondeo Mk5 Floor Console Rear Ambient Light Wire Cable DS73-14G275-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 73010137N

Jaguar XK8 X100 Headlight Control ECU Modul 73010137N

€32.95

Free delivery: Nov 12 – 13

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: Nov 12 – 13

If paid before 14:00

Part no. 8632554

Fuse Box Cover BMW X3 G01 X4 G02 Trim Panel Lid Housing Bracket 8632554

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6867170

Air Module BMW F20 F21 F30 F31 F32 F36 ECU ICM Plus SRS Control Unit 6867170

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

...

Showing 2773-2871 of 22939 products