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 F10 ECU Body Control Module Junction Box V2 PL6 JBBFE III 9252331

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8517874-12

BMW F20 F21 F30 116d 316d N47N 116HP Engine Control ECU DDE Kit 8517874 Manual

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06K907425J-4

Seat Leon Cupra 5F 2.0 TFSI 290HP DNUC Engine ECU Kit 06K907425J + BCM + Key

€222.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9315104

BMW X3 F25 X4 F26 Door Wiring Harness Front Driver's Door Wiring Loom 9315104

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G0907468F

Audi A6 C7 Central Getaway Control Unit Module ECU 4G0907468B

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8H52-18D540-AA

Range Rover L322 Webasto Telestart Pre Heating Control Module 8H52-18D540-AA

€113.95

Free delivery: Sep 15 – 16

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Part no. 8W6971104M

Audi A5 F5 Rear Bumper Parking Sensor Wiring Loom Cable Harness 8W6971104M

€47.95

Free delivery: Sep 15 – 16

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Part no. 5K0962132A

Audi Q3 F3 Keyless Entry Amplifier Control Box Module Aerial Antenna 5K0962132A

€23.95

Free delivery: Sep 15 – 16

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Part no. 6770137

BMW E60 E61 E63 E64 E70 E71 Yaw Rate Acceleration Speed Sensor 6770137

€23.95

Free delivery: Sep 15 – 16

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Part no. 9326437

BMW F30 F31 Wiring Passenger Loom Front Door Cables Harness 9286241

€32.95

Free delivery: Sep 15 – 16

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Part no. DPLA-17509-BB

Range Rover Sport L494 Rear Window Wiper Control Module Unit ECU DPLA-17509-BB

€28.95

Free delivery: Sep 15 – 16

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Part no. A0025428419

Relay Mercedes W176 W246 4-Pin Black Hella 12V A0025428419

€23.95

Free delivery: Sep 15 – 16

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Part no. 9663381380

Peugeot 207 Engine Wiring Harness Cable Loom 1.6 HDi DV6 9663381380

€94.95

Free delivery: Sep 15 – 16

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Part no. 9897171

BMW G30 Engine Wiring Harness Automatic Gearbox Wire Loom 9897171

€123.95

Free delivery: Sep 15 – 16

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Part no. 8655108-3

Mini One F54 F55 F56 B38 102HP Engine Control Unit ECU DME 8655108 Automatic

€370.95

Free delivery: Sep 15 – 16

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Part no. 8R0971687B

Audi Q5 8R Rear Door Wiring Loom Harness Left N/S 8R0971687B

€23.95

Free delivery: Sep 15 – 16

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Part no. 5A5D0D7

BMW X1 U11 Ground Minus Negative Cable Wiring Harness 5A5D0D7

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8092583

Differential Lock Module BMW F10 M5 F80 M3 Rear Axle Control Unit ECU 8092583

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YMM000390

Land Rover Discovery 2 L318 Door Wiring Harness Loom Rear Left N/S YMM000390

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6951674-CAR

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Carbonschwarz Black

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8636071

BMW F30 F31 F32 F36 Engine Gearbox Module Wiring Loom Harness 8636071 8635695

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6824117G

Mini F60 Hybrid High Voltage Battery Wiring Loom Harness 6824117G

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8F0959655C

Audi A5 8F Cabrio Air Module Control Unit ECU Crash Control Sensor 8F0959655C

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7177697-3

Plug Socket BMW E61 LCI Rear Lamp Touring Trunk Lid Wiring Left N/S 6984746

€23.95

Free delivery: Sep 15 – 16

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Part no. 9688409680

Peugeot 5008 2.0 HDI Diesel Glow Plug Wiring Loom Cable 9688409680

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. KT1T-14G087-EL

Ford Fiesta Mk8 Bluetooth Control Module Unit ECU 1.0 EcoBoost KT1T-14G087-EL

€66.95

Free delivery: Sep 15 – 16

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Part no. 5Q0937503B

Audi A3 8V Volkswagen Golf Mk7 Fuse Relay Plate 5Q0937503B

€23.95

Free delivery: Sep 15 – 16

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Part no. A2048205189

Mercedes-Benz C-Class W204 Aerial Antenna Amplifier Unit A2048205189

€28.95

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Part no. AV6T-14A076-AB

Ford Focus Mk3 Fuse Box Relay Cover Cap Flap AV6T-14A076-AB

€23.95

Free delivery: Sep 15 – 16

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Part no. A2479002613

Mercedes CLA C118 W177 W205 W213 Telematics Control Unit Module A2479002613

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055401492

Mercedes W205 Door Wiring Harness Door Control Loom Front Left N/S A2055401492

€104.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9303594

BMW Z4 E89 Anti Theft Alarm System Module Control Unit DWA 9303594

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AH42-18C941-AG

Land Rover Discovery 4 L319 USB Audio Stereo Control Unit Module AH42-18C941-AG

€32.95

Free delivery: Sep 15 – 16

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Part no. DS7T-15603-AD

Ford Mustang GT Mk6 Door Keyless Entry Module Control Unit DS7T-15603-AD

€32.95

Free delivery: Sep 15 – 16

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Part no. 80A907247A

Audi Q5 FY Keyless Entry Amplifier Control Box Module Aerial Antenna 80A907247A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8720724

BMW F70 U11 F74 Gran Coupé Power Distribution Fuse Relay Box Module 8720724

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W8971693R

Audi A5 F5 Door Trim Panel Wiring Harness Wire Cable Rear Left N/S 8W8971693R

€56.95

Free delivery: Sep 15 – 16

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Part no. 8408383

Parking Sensor PDC BMW X5 E53 Front Cover Control Primed 8408383

€23.95

Free delivery: Sep 15 – 16

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Part no. 4G8907468H

Audi A7 4G8 S6 C7 Gateway Module Unit Diagnosis Interface 4G8907468H

€51.95

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Part no. 5A0AFB9-1

BMW G20 G28 LCI LED Headlight Level Control Unit Ballast Module 5A0AFB9

€66.95

Free delivery: Sep 15 – 16

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Part no. 1Q0971120AH

VW Eos 1F Front Door Wiring Loom Harness Cable Driver's Side O/S 1Q0971120AH

€28.95

Free delivery: Sep 15 – 16

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Part no. 8T0971369AF

Audi A5 8F Lumbar Support Wire Harness Wiring Cable Front Right O/S 8T0971369AF

€32.95

Free delivery: Sep 15 – 16

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Part no. A0061514501-2

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

€66.95

Free delivery: Sep 15 – 16

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Part no. A6421500326

Mercedes W204 OM642 224HP Engine Control ECU A6421500326 Automatic

€165.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9389310

BMW F45 Door Wiring Front Driver's Door Loom Cable Wiring Harness 9389310

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1725401209

Mercedes R172 Teleaid Monitoring Sensors Wiring Harness Cable Loom A1725401209

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7811232

BMW X3 F25 Engine Wiring Start/Stop Manual Gearbox Module Loom Cable 7811232

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9270356-2

Fuse Carrier BMW F40 Mini F55 F56 F57 F60 Distribution Box 9270356

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YWC106600

Land Rover Discovery 2 L318 Air Module Control Unit SRS ECU YWC106600

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7L0937548C

Audi Q7 4L Volkswagen Touareg 7L Interior Fuse Relay Box Terminal 37L0937548C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6980020

BMW E63 E64 Rain Light Sensor Control Unit Module HUD 6980020

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V4971030AD

Audi A3 S3 8V Front Door Wiring Harness Loom Cable Passenger Side 8V4971030AD

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1838804

Ford C-Max Mk2 Front Seat SBR Belt Reminder System Sensor Module DT11-A625B02-AA

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2465408111

Mercedes W246 Door Wiring Loom Cable Front Right A2465408111

€32.95

Free delivery: Sep 15 – 16

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Part no. 5M0941295A

Volkswagen Golf Mk6 Scirocco Mk3 Headlight Range Sensor Motor 5M0941295A

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 04E907309AF-3

Seat Ibiza FR IV 1.2 TSI CJZD 110HP Engine Control ECU Kit 04E907309AF Manual

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9364729

Mini F55 F56 F57 Battery Cable Positive Wire Lead Cable Terminal 9364729

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. EJ32-14D617-AA

Range Rover L538 Front Door Control Unit Module Passenger Side EJ32-14D617-AA

€23.95

Free delivery: Sep 15 – 16

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Part no. 6791131

BMW F01 ICM Module Integrated Chassis Management QL ES Control Unit 6791131

€47.95

Free delivery: Sep 15 – 16

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Part no. AH42-15K609-AC

Land Rover Discovery 4 L319 Interior Ultrasonic Alarm Sensor Panel AH4215K609AC

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7L0937576

Porsche Cayenne 9PA Fuse Box Relay Trim Cover Panel Unit Housing 7L0937576

€23.95

Free delivery: Sep 15 – 16

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Part no. 8W9971104T

Audi A4 B9 Rear Bumper PDC Wiring Parking Sensor Loom Harness 8W9971104T

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A4144460116

Mercedes W414 Central Locking Lock Alarm Control Module ECU A4144460116

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6871062

BMW F01 F07 F10 F12 VDC Module Rear Suspension Level Control Unit 6871062

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9294209

BMW X3 F25 Radio CD Player Head Unit Navigation Sat Nav CIC Alpine 9294209

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2055404767

Mercedes C205 Front Door Harness Wiring Loom Driver's Side A2055404767

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7164485-1

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2125400072

Mercedes W212 Fuse Box Housing Relay Unit Module A2125400072

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 8648843

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

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 8W0915101A-1

Audi A4 B9 Auxiliary Battery Voltage Converter Module Unit 8W0915101A

€189.95

Free delivery: Sep 14 – 16

If paid before 14:00

Part no. 8379938

BMW 3 Series E46 Ultra Sonic-Module 8379938

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8577243

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

€28.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A2118705526

Mercedes W219 Motorola Telephone Control Module DC UHI MOST A2118705526

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7L6971073F

VW Volkswagen Touareg 7L Front Frame Panel Wiring Harness Cable 7L6971073F

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2139004009

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6J0035342F

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

€28.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 8F0971030AM

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

€42.95

Free delivery: Sep 15 – 16

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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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 8P1971381B

Audi A3 8P Seat Heating Lumbar Support Wiring Harness Left N/S 8P1971381B

€23.95

Free delivery: Sep 15 – 16

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Part no. 8K0959792A

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

€23.95

Free delivery: Sep 15 – 16

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Part no. 7LA971793B

Volkswagen Transporter T6 Battery Earth Cable Line 7LA971793B

€23.95

Free delivery: Sep 15 – 16

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Part no. 9128569

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

€23.95

Free delivery: Sep 15 – 16

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Part no. A2055400292

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

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2218208202

Mercedes W221 Front Centre Dashboard Tweeter Speaker A2218208202

€33.95

Free delivery: Sep 15 – 16

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Part no. CH22-14D202-BA

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

€23.95

Free delivery: Sep 15 – 16

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Part no. F1B1-12A650-AYA

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

€237.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W8971036D

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

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2215408401

Mercedes W221 Air Suspension Control Unit Module A2215408401

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G0971100

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

€23.95

Free delivery: Sep 15 – 16

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Part no. 6926962

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

€23.95

Free delivery: Sep 15 – 16

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Part no. 6868251

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

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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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: Sep 15 – 16

If paid before 14:00

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