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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BMW X5 E53 Rear Light Trunk Lid Boot Tailgate Lamp Wiring Cable Left N/S 6916913

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125400072

Mercedes W212 Fuse Box Housing Relay Unit Module A2125400072

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DS7T-19C107-FH

Ford Mondeo MK5 Radio CD Player Head Unit DS7T-19C107-FH 2360230

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8648843

BMW F45 Mini F60 B38X High Voltage Accumulator Negative Ground Cable 8648843

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KT1T-19H406-CG

Ford Transit Connect Mk2 Front Windscreen Lane Camera Unit KT1T-19H406-CG

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8379938

BMW 3 Series E46 Ultra Sonic-Module 8379938

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8577243

BMW X3 F25 Battery Cable Wire Lead Positive Alternator Starter X4 F26 8577243

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. ET76-14A584-BAC

Ford Transit Courier Front Door Wiring Loom Harness Right O/S ET76-14A584-BAC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118705526

Mercedes W219 Motorola Telephone Control Module DC UHI MOST A2118705526

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139004009

Mercedes W213 Door Module Front Left N/S Control Unit A2139004009

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6J0035342F

Seat Ibiza 6J Mk4 Dashboard MMI Multimedia USB AUX Socket Interface 6J0035342F

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F1971036F

Audi A6 C6 Front Passenger Door Wiring Left N/S Harness Loom Cable 4F1971036E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14F041-AC

Land Rover Discovery Sport L550 Body Control Module BCM ECU FK72-14F041-AC

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971030AM

Audi A5 8T Front Door Electric Wiring Loom Harness Passenger's Side 8F0971030AM

€23.95

Free delivery: Nov 12 – 13

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Part no. 7330822

BMW F01 F02 F10 LCI G30 Front Seat Support Trim Cover Ivory White 7317453

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M1TT-15K868-CSC-DIS

Ford Puma Mk2 CF7 Rear Bumper PDC Wiring With Sensors Blue 5JDC M1TT-15K868-CSC

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959792A

Audi A5 8T Door Control Module Front Left N/S 8K0959792A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7LA971793B

Volkswagen Transporter T6 Battery Earth Cable Line 7LA971793B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0035613

Audi A4 S4 RS4 B8 A5 S5 8T Telephone Control ECU Housing Cover Lid 8T0035613

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9128569

BMW E81 E82 E87 LCI E88 Wiring Harness Air Valve Air Flap 9128569

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055400292

Mercedes W205 Door Wiring Harness Door Control Loom Front Right O/S A2055400292

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2118362

Ford Transit Custom Mk8 2.0 Automatic Gearbox ECU Control Module GK21-12B565-ED

€161.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055404642

Mercedes W205 GLC C253 X253 Door Card Wiring Harness Driver's Side A2055404642

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LK72-13A444-BBA

Land Rover Discovery Sport L550 Wiring Loom Harness Cable Right LK72-13A444-BBA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218208202

Mercedes W221 Front Centre Dashboard Tweeter Speaker A2218208202

€33.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CH22-14D202-BA

Land Rover Discovery 4 L319 Centre Console Armrest Wiring Cable CH22-14D202-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1B1-12A650-AYA

Ford Fiesta Mk7 1.5 TDCI UGJC 140HP Engine Control ECU F1B1-12A650-AYA Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-14401-FH-1

Ford Transit Custom Fuse Box Power Distribution 2.2 TDCi Diesel BK2T-14401-FH

€32.95

Free delivery: Nov 12 – 13

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Part no. 8W8971036D

Audi A5 F5 Front Door Wiring Harness Cable Passenger Side 8W8971036D

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0971100

Audi A6 C7 A7 4G Roof Headliner Wiring Loom Harness Cable 4G0971100

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6926962

BMW E60 E61 Front Seat Adjustment Switch Right O/S 6926962 6930048

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6868251

Air Module BMW F01 F02 LCI F07 GT F10 F11 F13 ECU ICM Control Unit 6868251

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7624412

BMW 1 3 Series F20 F21 F30 Cable Alternator Starter Base B Wire 7624412

€23.95

Free delivery: Nov 12 – 13

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Part no. 1435881-2

Ford Transit Mk7 Tail Light Rear Wire Cable Connector Left N/S 6C11-13451-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0919294G

Audi A3 8V PDC Parking Distance Control Sensor Module Unit ECU 5Q0919294G

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6395400044

Mercedes Vito W639 Anti Theft Alarm Switch Loom Cable A6395400044

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0971405

Audi A3 8V Q2 GA VW Golf CD AdBlue Tank Wiring Harness Cable 1.6 TDI 5Q0971405

€42.95

Free delivery: Nov 12 – 13

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Part no. 5F4971687D

Seat Leon MK3 Rear Door Wiring Harness Loom Cable 5F4971687D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6T-14324-BAF

Ford Kuga Mk1 C394 Starter Cable Wire Lead 2.0 TDCi Diesel AV6T-14324-BAF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0959655H

Audi A3 8P Air Module Control Sensor SRS System ECU Unit 8P0959655H

€23.95

Free delivery: Nov 12 – 13

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Part no. 1K0907530G

Audi A3 8P Gateway Module Diagnostic Interface Control Unit ECU 1K0907530G

€23.95

Free delivery: Nov 12 – 13

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Part no. KT1T-19K351-BC

Ford Transit Connect Mk2 Aerial Antenna Module Left N/S KT1T-19K351-BC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9326026

BMW F30 F31 F32 PDC Wiring Front Bumper Cable Loom Harness 9326026

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8380407-1

BMW X5 E53 Power Distribution Fusebox Cover Fuse Box 8380407

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8R0945094-2

Audi Q5 8R Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 8R0945094

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971727B

Audi A8 4H D4 Quattro Fuel Tank Pump Wiring Loom Harness 4H0971727B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6958446

BMW E65 E66 E67 Control Unit Door Front Passenger Side Module ECU 6958446

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6M21-14B684-BA

Ford Mondeo Mk4 Galaxy Mk2 Front Seat Wiring Loom Cable 6M21-14B684-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9136726-2

BMW Mini Cooper R55 R56 Multifuse B Battery Power Distributor Cable 9136726

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FT1T-15K857-AE

Ford Transit Connect Mk2 Centre Console Wiring Loom Harness Cable FT1T-15K857-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0937548

Audi RS4 B7 8E 8H Battery Main Fuse Box Power Housing Cover Bracket 8E0937548

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018LA

Audi A6 C7 2.0 TDI CGLC 177HP Engine Control Unit ECU 03L906018LA Manual

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99164631302

Porsche 981 Steering Column Microphone Right O/S 99164631302

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0971687A

Audi A6 C6 Door Window Motor Wiring Cable Loom Front Right O/S 4F0971687A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM5T-18K891-AC

Ford C-Max Mk2 Radio Aerial Antenna Wiring Cable Harness AM5T-18K891-AC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03G906056S-1

Audi A3 8P 1.9 TDI BLS 105HP Engine Control Unit ECU Kit 03G906056S Manual

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. E1BT-18C815-HK

Ford Fiesta Mk7 Radio Stereo CD Player Head Unit Multimedia E1BT-18C815-HK

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P7907115H

Audi A3 8P 1.8 TFSI CDAA 160HP Engine Module ECU Kit 8P7907115H Automatic

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7807187-1

BMW F01 E70 Alternator Generator 180A 14V Unit Elstock 28-6744 Diesel 7807187

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2N0941329C

VW Volkswagen Crafter Mk2 SY Reduction Agent Metering System Unit 2N0941329C

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B035223

Porsche Macan 95B Sound Amplifier Unit Module 2.0 TFSI CNCC Petrol 95B035223

€232.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EJ32-1430-CC

Range Rover Evoque L538 Negative Battery Cable Wiring EJ32-14301-CC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-14A699-GB

Land Rover Discovery 4 Passenger Seat Wire Wiring Cable L319 AH22-14A699-GB

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7799146

Mini R55 R56 Alternator Supporting Bracket Mount Generator Diesel W16 7799146

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0941003C-1

Audi A3 8P Headlight Light Lamp Front Left N/S Harness Loom Wire 8P0941003C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9664909780

Peugeot 308 T7 Air Bag Control Module ECU Crash Data Control Unit 9664909780

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-14F447-AN

Land Rover DISCOVERY SPORT L550 ABS Pump Module Control Unit K8D2-14F447-AN

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6549009600-3

Mercedes GLC 220d X253 654.920 194HP 4Matic Engine Control Unit A6549009600

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9292647

BMW F20 F21 Body Control Module BCM FEM Unit 1.6 Diesel N47D16A 9292647

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 21014375-1

Mercedes W204 Heater Matrix Booster Wiring Loom Cable 2.1 Diesel 21014375

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8573260-14

BMW F20 F21 114d Diesel N47N 95HP Engine Control ECU Kit DDE 8573260 Manual

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q4959592R

Skoda Octavia IV Door Module Control Unit Front Passenger's Side 5Q4959592R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06D911023A

Audi A4 B8 2.0 TFSi Petrol Engine Starter Motor Actuator Unit 06D911023A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0959435N

Audi Q3 F3 VW Golf Mk7 Entry Keyless Kessy Control Module Unit ECU 3Q0959435N

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q0971121B

Volkswagen Eos 1F Door Wiring Loom Harness Cable Passenger Side 1Q0971121B

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907159L

Audi A4 B9 A5 F5 Impact Sound Control Unit Module 8W0907159L

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6932644

BMW 3 5 Series E60 E71 E90 E92 Suppression Filter Aerial Module Antenna 6932644

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135409616

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9259831

BMW E93 Convertible Wiring Loom Front Door Cables Cable Passenger Side 9186668

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0035195M

Audi A3 8P CD Radio Stereo Head Unit Symphony 8P0035195M

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H0971692AH

VW Transporter T5 Rear Sliding Side Door Wiring Loom Harness Cable 7H0971692AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0051435FQ

Audi A5 8T Interior Phone Holder Tray Connection Station Unit 8P0051435FQ

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959792H

Audi A8 D4 4H Front Door Control Module Unit ECU Passenger Side 4H0959792H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2K0972175A

Volkswagen Caddy Mk3 Rear Wiper Motor Wiring Harness Cable 2K0972175A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8489325

BMW i3 I01 94Ah Rex Hybrid Basic Control Unit Module ECU 8489325

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99164630702

Porsche 981 Steering Column Microphone Left N/S 99164630702

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9253637

BMW 3 5 Series F10 F11 F30 F31 Air Control Unit Module 9253637 65779253637

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0907401AM

Audi Q7 4M 3.0TDI DPXB Quattro 218HP Engine Control ECU 4M0907401AM Automatic

€759.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8645329

BMW F20 F21 F30 F31 LCI Alternator Generator 14V 180A 8645329

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5NA971175

Volkswagen Tiguan MK2 Rear Tailgate Wiring Loom Harness Cable 5NA971175

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7601354

BMW X3 F25 Dummy Grommet Electrical Wiring Cable Harness Fastener 7601354

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0963649

Volkswagen T-Roc Steering Wheel Slip Squib Ring 5Q0963649

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0035423-1

Audi A4 RS4 B7 Tweeter Speaker Door Front Left N/S Trim Kamut Beige 8E0035423

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6822570

BMW F40 F44 Positive Battery Terminal Fuse Box 6822570

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9372556

BMW G11 Door Wiring Harness Rear Left Right Door N/O/S Wiring Loom 9372556

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6793927

BMW X5 E70 LCI ACC Active Cruise Control Module Unit Sensor 6793927

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0971142A

Audi A8 S8 D3 Door Window Lifter Wiring Cable Rear Left Right N/O/S 4E0971142A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7C0971819C

VW Volkswagen Crafter SY Reducing Tank Harness Adapter Wiring 7C0971819C

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2342840

Ford Transit Custom Gearbox Wiring Loom 2.2 TDCI Diesel BK2T-14D502-GFE 2342840

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

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