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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Volkswagen Touareg 7P Control Unit Module ECU Bracket Holder Retainer 7P6907297

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Toyota Verso R2 Engine Starter Motor 2.0 Diesel 1ADFTV Valeo 12V 28100-0R020C

€42.95

Free delivery: Nov 12 – 13

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Toyota Yaris Mk2 P9 Engine Start Stop Control Module ECU Unit 89261-52050

€23.95

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Smart 453 Fortwo Door Pressure Crash Impact Sensor Front Left N/S A4539050200

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G8971095AH

Audi A6 C7 A7 4G Front PDC Parking Sensor Wiring Loom Harness 4G8971095H

€118.95

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Audi A5 8T 3.0 TDI CLAB Diesel Engine Starter Motor 059911021K

€37.95

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BMW X1 E84 18dX Diesel N47N Engine Control Unit ECU Kit Set DDE 8574351 Manual

€113.95

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Part no. 896610F150

Toyota Verso Mk2 Engine Control Module Unit ECU 2.0 D 127HP 89661-0F150 Manual

€28.95

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Part no. 5B4FD70

BMW F74 Gran Coupé Interior Wiring Loom Harness Cable Adapter Connector 5B4FD70

€32.95

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Part no. 05E972627B

Volkswagen Golf SV 1.5 TSI DADA Automatic Engine Wiring Harness 05E972627B

€108.95

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Part no. DG9T-14631-HHJ

Ford Mondeo Mk5 Door Wire Harness Cable Wiring Front Left N/S DG9T-14631-HHJ

€32.95

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Range Rover L322 YAW Rate Speed ESP Sensor Module Bosh SRO000020

€75.95

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Part no. 127073X

Mercedes W176 Electrical Wiring Loom Harness Cable 127073X

€23.95

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Part no. CK52-14301-AC

Range Rover L405 Negative Minus Battery Cable Wiring Loom Harness CK52-14301-AC

€23.95

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Part no. 8P0907063B

Audi TT 8J Body Comfort Control BCM Module Unit ECU 8P0907063B

€113.95

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Part no. A9065451640

Mercedes-Benz Sprinter W906 Fuse Box Unit Holder Bracket Frame A9065451640

€23.95

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Part no. AV6T14A067BC

Ford Transit Connect Mk2 II Fuse Box Battery Terminal Unit Module AV6T14A067BC

€23.95

Free delivery: Nov 12 – 13

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Part no. A2118201626

Mercedes S211 W211 Rear Door Control Unit Right O/S A2118201626

€23.95

Free delivery: Nov 12 – 13

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Part no. A1331510745

Mercedes C117 CLA 45 AMG Heat Shield Alternator Plate Petrol M133 A1331510745

€28.95

Free delivery: Nov 12 – 13

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Part no. A2035405707

Mercedes-Benz CL203 Front Left Right Door Wiring Loom Harness A2035405707

€23.95

Free delivery: Nov 12 – 13

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Part no. A2045451047

Control Unit Bracket Mercedes W204 W212 Audio Module Holder Mount A2045451047

€23.95

Free delivery: Nov 12 – 13

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Part no. 8507360

Automatic Gearbox Wiring BMW F10 F11 530d N57 Engine Loom Harness Cables 8513823

€127.95

Free delivery: Nov 12 – 13

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BMW E81 E82 E87 E90 PDC Ultrasonic Sensor Front Rear Melbourne Red - A75 8046453

€23.95

Free delivery: Nov 12 – 13

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Part no. RADIO

Audi A3 A4 TT Android Radio DVD GPS Head Unit

€94.95

Free delivery: Nov 12 – 13

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Part no. FV61-12A650-BRA

Ford Transit Connect Mk2 1.5 TDCi 75HP Engine Control ECU FV61-12A650-BRA Manual

€142.95

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Renault Trafic 3 Vauxhall Vivaro B 1.6 DCI Engine Wiring Loom Cable 226334803R

€23.95

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Part no. 5Q0906121K

Volkswagen Golf Mk7 Fuel Pump Control Unit Module ECU 1.6 TDI Diesel 5Q0906121K

€47.95

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Mercedes W211 Battery Box Cover Lit Top Housing A0005410005

€23.95

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Part no. 5Q0915181F

Skoda Octavia Mk3 Negative Battery Terminal Wiring Cable 1.6 TDI 5Q0915181F

€23.95

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Part no. AA6T-14B321-CA

Ford Fiesta Mk7 Air Module Control Unit Sensor SRS AA6T-14B321-CA

€94.95

Free delivery: Nov 12 – 13

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Part no. 7795553

BMW E60 530d M57N 218HP ECU Engine Control Unit Automatic Diesel 3.0 7795553

€108.95

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Part no. KK72-12C520-FBC-1

Land Rover Discovery L550 2.0 204DT 180HP Engine ECU KK72-12C520-FBC Automatic

€222.95

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Part no. 7L5971120A

Porsche Cayenne 9PA Front Door Wiring Loom Harness Left Right N/O/S 7L5971120A

€23.95

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Part no. BK3T-9K499-BBB

Ford Transit Mk8 Fuse Relay Box Wiring Harness 2.2 TDCi Diesel BK3T-9K499-BBB

€246.95

Free delivery: Nov 12 – 13

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Part no. K8D2-10C814-AB

Land Rover Discovery Sport L550 Battery Hold Down Support Bracket K8D2-10C814-AB

€23.95

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Audi A7 4G8 Glow Plug Control Unit Controller Module 4L0907282B

€70.95

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Part no. 3C8971693CH

VW Volkswagen Passat CC Door Wiring Harness Cable Rear Left N/S 3C8971693CH

€23.95

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Part no. AX23-14A005-XB

Jaguar XF X250 Fuse Relay Box Holder Bracket Mount Support 8X2T-14A067-DA

€23.95

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Part no. F1CT-14B321-RC

Ford C-Max Mk2 Air Module SRS Control Unit F1CT-14B321-RC

€37.95

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Part no. 8W0941824AK

Audi A4 B9 A5 F5 Q5 FY Fuse Box Battery Terminal 8W0941824AK

€23.95

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Part no. 5B8E985

BMW F74 Gran Coupé Body Comfort Control Unit Module 5B8E985

€232.95

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Part no. 4H0907182G

Audi A8 D4 4H Multicontour Seat Module Control Unit Left Right N/O/S 4H0907182G

€42.95

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Part no. 31327030

Volvo V40 Battery Negative Earth Cable Terminal Minus Wire Loom 31327030

€23.95

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Part no. 5C6945095H-1

Volkswagen Jetta A6 Rear Left N/S Tail Light Plug Cable 5C6945095H 4D0972704

€23.95

Free delivery: Nov 12 – 13

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Part no. 7424109-2

BMW F32 F33 F80 F82 F83 Headlamp Headlight Xenon Wiring Cable Left N/S 7424109

€23.95

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Part no. 5B76CE8

BMW 1 Series F70 Light Control Module Unit Interior LED 5B76CE8

€199.95

Free delivery: Nov 12 – 13

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Part no. A6519003701-3

Mercedes W212 OM651.924 204HP Engine Control ECU Kit A6519003701 Automatic

€189.95

Free delivery: Nov 12 – 13

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Part no. FK72-13193-BK-2

Land Rover Discovery L550 Rear Lamp Socket Plug Cable Left N/S FK72-13193-BK

€23.95

Free delivery: Nov 12 – 13

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Part no. A2518703390

Mercedes W251 Rear Passengers Entertainment Control Unit A2518703390

€70.95

Free delivery: Nov 12 – 13

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Part no. A0001501780

Ignition Coil Mercedes W202 W203 M111 Cable Connector A0001501780

€23.95

Free delivery: Nov 12 – 13

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Part no. 8E0972081

Audi A4 B8 A5 8T 8F Starter Wiring Loom Harness Clip 8E0972081

€23.95

Free delivery: Nov 12 – 13

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Part no. A2749000800-1

Mercedes W205 C200 274.920 184HP Engine ECU Kit A2749000800 Key Lock Automatic

€222.95

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Part no. A2465410100

Mercedes W176 W246 Battery Cover Accumulator Trim Panel Lid A2465410100

€23.95

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Part no. N8D2-14N178-AA

Land Rover Discovery Sport L550 Hybrid Cooling Fan Link Lead N8D2-14N178-AA

€66.95

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Volkswagen Tiguan Mk2 Arteon 360° Camera Control Unit Module 5Q0907556C

€294.95

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Part no. 2K0971121AK

Volkswagen Caddy Mk2 Front Door Wiring Harness Cable Passenger Side 2K0971121AK

€66.95

Free delivery: Nov 12 – 13

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Part no. 5QF959351

Seat Ibiza Mk5 Crash Impact Sensor Accelerator Sensor Control Unit 5QF959351

€23.95

Free delivery: Nov 12 – 13

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Energy Distributor Mercedes W204 OM656 Power Control Unit Module A0065454601

€32.95

Free delivery: Nov 12 – 13

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Part no. 2100493N

Audi A5 8T Seat Cable Front Left Right N/O/S Wiring Loom Harness 2100493N

€23.95

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Part no. 8E0971693P

Audi A4 B7 Door Card Speaker Harness Loom Cable Wiring Rear 8E0971693P

€23.95

Free delivery: Nov 12 – 13

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Part no. 99161030104

Porsche 718 Boxster 982 Power Distribution Control Unit 99161030104

€313.95

Free delivery: Nov 12 – 13

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Part no. 3D0937576

VW Volkswagen Phaeton 3D Main Fuse Socket Electrical Control Unit 3D0937576

€23.95

Free delivery: Nov 12 – 13

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Part no. C1BT-14027-ADD

Ford Fiesta Mk7 Door Wiring Loom Harness Cables Rear Left N/S C1BT-14027-ADD

€23.95

Free delivery: Nov 12 – 13

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Part no. CV6T-14K138-MFF

Ford Kuga C520 Front Door Wiring Loom Harness Left N/S Side CV6T-14K138-MFF

€23.95

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BMW E46 Amplifier Holder Audio Catch Bracket Mount Trim 8380118

€23.95

Free delivery: Nov 12 – 13

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Part no. 8W6971036BN

Audi S5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971036BN

€70.95

Free delivery: Nov 12 – 13

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Part no. 7P5907409R

Porsche Cayenne 92A CUDC 385HP Diesel Engine Control Unit Module ECU 7P5907409R

€598.95

Free delivery: Nov 12 – 13

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BMW E61 Body Control Module Unit ECU BCM 6969012

€23.95

Free delivery: Nov 12 – 13

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Part no. 4H0955557

Volkswagen VW Polo 6R 5 Audi A6 C7 Air Module Crash Impact Sensor 4H0955557

€23.95

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Part no. 03L906022RC

Audi TT 8J 2.0TDI 170HP CBBB Quattro Engine Control ECU 03L906022RC Manual

€142.95

Free delivery: Nov 12 – 13

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Part no. 8V5T-14A005-KME

Ford Fiesta Mk7 Fuse Box Control Unit Module 8V5T-14A005-KME

€23.95

Free delivery: Nov 12 – 13

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Part no. 8H0959255B

Audi A4 B6 B7 Cabriolet Comfort Convenience Body Control Module ECU 8H0959255B

€232.95

Free delivery: Nov 12 – 13

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Part no. 5CU971104

VW Volkswagen Jetta A6 Mk6 Rear Bumper PDC Sensors Wiring Loom Harness 5CU971104

€132.95

Free delivery: Nov 12 – 13

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Part no. 6G9N-10757-AF

Range Rover Evoque L538 L550 Battery Tray Housing Box Panel 6G9N10757AF

€23.95

Free delivery: Nov 12 – 13

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Part no. AH22-14F041-BE

Land Rover Sport L320 Smart Junction Box Fuse Box Module Unit AH22-14F041-BE

€47.95

Free delivery: Nov 12 – 13

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Part no. 6C11-12A650-AF

Ford Transit Mk7 Engine Control Unit ECU 2.4 TDCi 100HP 6C11-12A650-AF Manual

€56.95

Free delivery: Nov 12 – 13

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BMW F20 Door Cable Harness Wiring Front Right O/S 9335289

€23.95

Free delivery: Nov 12 – 13

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Jaguar XK8 X100 Front Windscreen Rain Sensor Module Unit System LJD7350AA

€37.95

Free delivery: Nov 12 – 13

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Volvo V40 Battery Negative Terminal Cable Lead Sensor Bracket Holder 30644809

€37.95

Free delivery: Nov 12 – 13

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Ford Transit Connect Mk2 Dashboard Centre Console Wiring Harness DV6T-15K857-CD

€23.95

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Volkswagen Transporter T6 Positive Plus Battery Cable 7E0971158A

€23.95

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€32.95

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€66.95

Free delivery: Nov 12 – 13

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€23.95

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€142.95

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Mini Countryman F60 High Voltage Cable Cover Hybrid HV Protection Case 6832776

€47.95

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BMW F36 Gran Coupe Headlight Height Level Sensor Rear Right O/S 2959574

€28.95

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€28.95

Free delivery: Nov 12 – 13

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Part no. 5H2Z-14A686-BA-1

Land Rover Discovery 3 L319 Crash Impact Sensor Left Right N/O/S 5H2Z-14A686-BA

€23.95

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Part no. GHCT-14A624-AHA

Land Rover Discovery Sport L550 Wire Loom Harness Connector GHCT-14A624-AHA

€23.95

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Part no. 6R0971349AM

Volkswagen Polo Mk5 V 6R Battery Cable Alternator Starter 6R0971349AM

€28.95

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Ford Transit Custom Data Link Obd Port Module JK2T-14F642-AC

€23.95

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Mercedes W251 PDC Parking Assistant Control Unit Module ECU A2519000800

€56.95

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Part no. 5Q0971068G

Audi A3 8V VW Golf AU Jetta BU Exhaust Flap Wiring Loom Harness Cable 5Q0971068G

€23.95

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Part no. 8509226

BMW F31 Diesel Engine Alternator Generator 220A Valeo N57D30A 8509226

€94.95

Free delivery: Nov 12 – 13

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Porsche Cayenne Turbo 92a Radio CD Player Digital Display Unit 7PP919193AF

€550.95

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BMW X1 U11 GPS Navigation Audio Radio Infotainment Head Unit Control 5B61812

€522.95

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Vauxhall Relay C Fiat Ducato Multifunction Display Screen 7357827680

€379.95

Free delivery: Nov 12 – 13

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Porsche Cayenne 92A Crash Impact Module Sensor Wiring Harness Cable 7P5971677

€23.95

Free delivery: Nov 12 – 13

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