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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Mercedes A207 C207 SAM Control Unit Module Controller Rear A2129001806

€66.95

Free delivery: Nov 12 – 13

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Part no. 8615581

BMW 3 F30 LCI 330e B48X Control Unit Bracket Holder Mount 8615581

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-13A444-BBC

Land Rover Discovery Sport L550 Rear Seat Folding Wiring Cable FK72-13A444-BBC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G8971030CS

Audi A7 4G Front Door Wiring Loom Harness Passenger Side 4G8971030CS

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9894330

BMW G20 G22 G23 G26 G42 G87 Negative Battery Earth Cable Wiring 9894330

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EH22-01445-AB

Land Rover Discovery 4 L319 Battery Pad Cover Panel EH22-01445-AB

€32.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 7H6970187FT

Volkswagen Transporter T5 Fuse Box Control Module Unit 7H6970187FT

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9218331

BMW E93 Radio Head Unit Comand CD DVD Player Changer 9218331

€617.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971227A

Audi A4 S4 8W A5 S5 F5 Battery Wiring Harness Cable Loom Distributor 8W0971227A

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6951637

BMW 1 3 SERIES E84 E90 E91 E92 SUCTION PIPE HOSE AIR CON EVAPORATOR COMPRESSOR

€23.95

Free delivery: Nov 12 – 13

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Part no. 7810002-1

BMW 1 Series E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE CAS 3 Key 7810002 Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK2T-18812-YB

Ford Transit MK8 Wire Loom Harness Lead Cable KK2T-18812-YB

€23.95

Free delivery: Nov 12 – 13

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Part no. 8727987

BMW F44 Gran Coupe Door Wiring Harness Rear Door Left Right N/O/S 8727987

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T-14297-BG

Ford Mondeo Mk4 Galaxy S-Max Windscreen Washer Nozzle Wiring 6G9T-14297-BG

€23.95

Free delivery: Nov 12 – 13

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Part no. 9243213

BMW X3 F25 Central Gateway Control Unit Module ECU 9243213

€28.95

Free delivery: Nov 12 – 13

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Part no. 3M5T-14B342-AB

Ford Mondeo Mk4 Side Air Module Crash Satellite Sensor 3M5T-14B342-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FT1T-15K868-AE

Ford Transit Connect Mk2 Rear Bumper Parking Sensor PDC Wiring FT1T-15K868-AE

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1725404105

Mercedes R172 Rain Sensor Wiring Harness Cable Loom A1725404105

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469008113

Mercedes GLE X156 4Matic Transfer Control Unit Module ECU A2469008113

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9270355

Fuse Carrier BMW F40 Mini F55 F56 F57 F60 Distribution Box 9270355

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95GG-14489-ZTA

Ford Mondeo Mk4 Wiring Harness Cable Connector 95GG-14489-ZTA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7164445-2

BMW X5 E53 Headlight Headlamp Lamp Front Left N/S Plug Wiring Cable 7164445

€23.95

Free delivery: Nov 12 – 13

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Part no. 4H0951253

Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit 4H0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0907280E

Audi Q7 4L On Board Power Supply Control Module Unit ECU 4F0907280E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7625474

MINI Cooper F55 F56 F57 F60 Battery Mounting Bracket Part Holder 7625474

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1669001709

Mercedes ML W166 SRS System Air Module Control Unit ECU A1669001709

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2475273

Ford Transit Connect Mk2 Wire Assy Wiring Cable Harness Loom 2475273

€23.95

Free delivery: Nov 12 – 13

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Part no. AH22-14301-BD

Land Rover Discovery 4 L319 Negative Battery Cable Wire AH22-14301-BD

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W0054635A

Audi A3 8V PDC Parking Sensor Control Unit Module Vodafone Automotive 8W0054635A

€56.95

Free delivery: Nov 12 – 13

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Part no. 8573574-1

BMW F06 F12 F13 640d N57 313HP Engine ECU DDE Kit CAS4 + Key 8573574 Automatic

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 83A971104S

Audi Q3 F3 Rear PDC Parking Sensors Wiring Loom Harness 83A971104S

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K5971687BG

Audi A6 C8 Door Wiring Wire Cable Harness Loom Rear Left Right N/O/S 4K5971687BG

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-14630-AHD

Range Rover Evoque L538 Front Door Wiring Harness Loom Left N/S BJ32-14630-AHD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0907115H-1

Audi S3 8P Engine Control Module ECU Manual 2.0 TFSI Petrol 265HP 8P0907115H Kit

€218.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV1T-14B532-BD

Ford Kuga Mk2 Rear Door Control Unit Module Left Right N/O/S CV1T-14B532-BD

€23.95

Free delivery: Nov 12 – 13

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Part no. A0015455116

Mercedes-Benz Vito Automatic Gearbox Control Unit ECU TCU A0015455116

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-18B849-AF

Ford Fiesta Mk8 Stereo Sound Amplifier Booster Module Unit H1BT-18B849-AF

€75.95

Free delivery: Nov 12 – 13

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Part no. A2218207389

Mercedes W221 Seat Headrest Display Monitor Rear Entertainment Unit A2218207389

€218.95

Free delivery: Nov 12 – 13

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Part no. 8966142A22

Toyota Rav4 Mk2 Engine Control Unit ECU 2.0 Petrol 147HP Manual 8966142A22

€237.95

Free delivery: Nov 12 – 13

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Part no. 7329789-1

BMW 2 F46 Gran Tourer Lamp Tillight Plug Socket Wiring Cable Left N/S 7329789

€23.95

Free delivery: Nov 12 – 13

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Part no. 80A907777N

Audi Q5 FY Active Suspension Module Damping Chassis Control Unit EFP 80A907777N

€284.95

Free delivery: Nov 12 – 13

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Part no. N47N-TIGERTUNING

Tiger Tuning N47N Diesel Chip Tuning Power Box Module Performance Remap

€80.95

Free delivery: Nov 12 – 13

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Part no. 8V0863051

Audi A3 8V AMP Amplifier Under Seat Cover Trim Panel Unit 8V0863051

€23.95

Free delivery: Nov 12 – 13

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Part no. 8T0971030AE

Audi S5 8T Door Wiring Wire Loom Cable Harness Front Passenger Side 8T0971030AE

€51.95

Free delivery: Nov 12 – 13

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Part no. BJ32-3C097-AA

Range Rover Evoque L538 Front Height Level Sensor Right O/S BJ32-3C097-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. H1BB-10723-AC

Ford Fiesta ST Mk8 Battery Tray Housing Bracket Holder Mount H1BB-10723-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1P0907115AB

Seat Leon Cupra Mk2 Engine Control Unit ECU 2.0 Petrol CDLD 241HP 1P0907115AB

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775406401

Mercedes W177 Door Wiring Loom Harness Cable Front Right O/S A1775406401

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7843526

BMW E90 E92 E93 M3 S65 Engine Starter Motor 7843526

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2515401830

Mercedes W251 Starter Motor Alternator Wiring Harness Cable Loom A2515401830

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2661538979-2

Mercedes W169 B150 M266.920 95HP Engine Control ECU A2661538979 Manual

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9229847

BMW E70 Door Wiring Front Passenger Door Loom Cables Harness 9229847

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8720913

BMW U06 U10 U11 Front Power Distributor Box Cover Lid Housing 8720913

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9224959

Dashboard Monitor BMW X5 X6 E70 E71 Onboard Display Screen 8,8" 9224959

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8516122

Battery Cable BMW X5 F15 X6 F16 Alternator Starter Wiring Loom Harness 8516122

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G6035577K

VW Volkswagen Golf GTI MK7 Roof Antenna Aerial Amplifier Right O/S 5G6035577K

€23.95

Free delivery: Nov 12 – 13

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Part no. 3C8971558AG

Volkswagen Passat CC Front Door Wiring Loom Harness Passenger Side 3C8971558AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8736682

BMW i3 I01 Body Domain Comfort Control Unit BDC Module ECU 8736682

€313.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2S6T-15K601-BA

Ford Transit Courier 3 Button Remote Key Fob 2S6T-15K601-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. MU5T-18808-EA

Volkswagen Amarok Nf Dashboard Tweeter Speaker Front Left N/S MU5T-18808-EA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1175450800

Negative Battery Terminal Mercedes C117 W176 W246 Lead Connector A1175450800

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1922171

Ford Kuga C520 Radio Player Navigation Display Screen Unit HJ5T-14G370-FFE

€246.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0915181B

Audi A4 B8 A5 8T A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8C11-12A650-CG

Ford Transit MK7 2.2 TDCI P8FA 85HP Engine Control ECU 8C11-12A650-CG Manual

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0919064

Audi A8 D3 Door Interior Light Fibre Optic Controller Wiring Harness 4E0919064

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9251722

BMW F20 Front Left Door N/S Wiring Loom Harness Cables 9251715

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4E0910552G

Audi S8 D3 5.2 FSI 450HP BSM Quattro Engine Unit ECU 4E0910552G Automatic

€241.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0555459628

Mercedes Cla Sport Handbrake Parking Brake Cable Wire Harness Loom A0555459628

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8865002331

Toyota Corolla E12 Aerial Antenna Control Relay Module Unit 8865002331

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0915519

Volkswagen Touareg 7P Battery Overload Protection Fuse Control Unit 4G0915519

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6W83-11572-AK

Jaguar XF X250 Ignition Barrel Key Reader Switch Control Unit 6W83-11572-AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DK62-15G590-BC

Range Rover Sport L494 Aerial Antenna Control Unit Module ECU DK62-15G590-BC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DH22-14B192-AA

Land Rover Discovery Sport L550 Relay 4-Pin 20A 12V Unit Black DH22-14B192-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9229899

BMW F01 F01N F02 F10 Tow Bar Trailer Towing Control Module Unit AHM 4 9229899

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5WA959655H

Volkswagen VW Golf Mk8 Air Module Control Unit ECU Module 5WA959655H

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0951177

Audi TT 8J Interior Roof Alarm Motion Ultrasonic Sensor 8J0951177

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6291501779

ECU Mercedes X164 Diesel OM629.912 Engine Control Module 306 HP Automatic

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK62-14N274-AD

Range Rover Sport L494 Hybrid Wiring Loom Harness Cables KK62-14N274-AD

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK3T-14D502-MCD

Ford Transit Mk8 Manual Transmission Wiring Harness 2WD 2.2 TDCI BK3T-14D502-FED

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8570934

BMW F20 F21 116d ed Diesel N47N 116HP ECU Engine Control Unit DDE 8570934 Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6827161

Mini Cooper F55 F56 Control Unit Module Active Sound Design Amplifier 6827161

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-14632-AAD

Land Range Rover Evoque L551 Door Wiring Harness Rear Right O/S K8D2-14632-AAD

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6822586

BMW F10 LCI F20 F21 F30 F31 DAB Bluetooth Head Control Unit Module Basic 6822586

€251.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0941004AK-2

Audi A4 B7 Headlight Wiring Harness Cable Plug Right O/S 8E0941004AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06J971082D

Audi Q3 8U Engine Injector Module Wiring Harness Cable 2.0 TFSI 06J971082E

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7592080-5

BMW E90 E91 LCI 325i N53 218HP Engine ECU Kit DME 7592080 CAS3 Key Automatic

€560.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0959795B

Audi Q7 4L Door Control Module Unit ECU Rear Left N/S 4L0959795B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K1BY12A650BA

Ford Puma St Cf7 Engine ECU Module 200HP 1.5 Petrol YZJA K1BY-12A650-BA Manual

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 92002681

Audi A1 GB A3 8V 8Y Headlight Level Adjustment Motor Actuator 92002681

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018EE

Skoda Octavia Mk2 Engine Control Unit ECU 2.0 TDI 140HP 03L906018EE Automatic

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0857925C

Audi A3 8P A4 B7 Glovebox Compartment Ipod Interface Connector 8E0857925C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A3FFB5

BMW F44 Body Control Module BDC ECU 5A3FFB5

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0906131A

Audi A3 8P Engine Unit Bracket ECU Module Holder Bracket Mount 8P0906131A

€23.95

Free delivery: Nov 12 – 13

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Part no. A4475411200

Mercedes Vito W447 Battery Support Holder Bracket Mount Tray A4475411200

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. J8A2-70718-AV

Range Rover Discovery L550 Evoque L551 Telematics Control Unit ECU J8A2-70718-AV

€280.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8513559

BMW X3 F25 30dX N57N Engine Module Injector Wiring Cable Loom Harness 8513559

€284.95

Free delivery: Nov 10 – 13

If paid before 14:00

Part no. 9221462

BMW F01 Front Seat Control Unit Module ECU Left Temic 9221462

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907530P

Audi A3 8V Gateway Control Module Unit ECU 5Q0907530P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0907159B

Audi TT 8J Alarm Signal Body Sound Impact Control Module Unit 8J0907159B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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