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 F01 F02 F03 F10 F11 F13 Central Gateway Control Lear Module Unit ECU 9380322

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Ford Ranger Mk4 Radio CD DVD Player Head Unit Navigation UW1B66DSXD

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Skoda Fabia 5J VW Polo 6R Air Module Control Unit SRS 6R0959655L

€47.95

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Seat Leon 5F 1.6 TDI CLHA 105HP Engine Control Unit ECU Kit 04L907309B Manual

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Mercedes W177 Engine Starter Wiring Loom Harness 2.0 Diesel 654920 A1775407732

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Audi A3 8P Tailgate Heated Rear Window Wiring Harness Loom 8P0971148A

€23.95

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Mercedes C Class W203 Solenoid SOLV Valve Wiring Harness Diesel A2035401113

€37.95

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Part no. A9075402605

Mercedes W907 Fuse Box Control Unit Module Q2 A9075402605

€32.95

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Part no. 9442117

BMW 1 2 Series F40 F44 IBS Negative Battery Lead 9442117 61219442117

€23.95

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Part no. 5Q0937084DF

Volkswagen Golf 5G Body Control Module Onboard Unit 5Q0937084DF

€28.95

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Part no. 9487220-1

Mini F56 B48A20B 231HP B48D 2.0 Engine Control ECU DME Kit Key Automatic 9487220

€408.95

Free delivery: Nov 12 – 13

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Part no. 6995617

BMW F40 F44 G20 G21X5 G05 X6 G06 Immobilizer Emergency Start Coil 6995617

€23.95

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Part no. BK2T-18D815-GD

Ford Transit Custom Radio Stereo Media Player Head Unit USB AUX BK2T-18D815-GD

€23.95

Free delivery: Nov 12 – 13

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Part no. A0128206610

Mercedes W204 W207 Roof Panel Alarm Sensor Module Control Unit A0128206610

€23.95

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Part no. 99161832133

Porsche Boxster Cayman 982 Headlight Range Control Unit Module 99161832133

€474.95

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Part no. 1789596

Ford Kuga Mk2 Keyless Entry Control Module Antenna Unit DS7T-15K603-GA

€23.95

Free delivery: Nov 12 – 13

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Part no. 8U0971029H

Audi Q3 8U Front Door Wiring Loom Harness Cable Driver's Side 8U0971029H

€47.95

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Part no. 7848839

BMW F80 F82 F91 F92 Trunk Boot Lid Automatic Smart Openning Sensor 7848839

€23.95

Free delivery: Nov 12 – 13

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Part no. 9384100

Mini F54 Clubman F60 Countryman KaFAS Camera Windscreen Unit Front 9384100

€42.95

Free delivery: Nov 12 – 13

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Part no. 9387626-1

MINI Cooper One F55 F56 Rain / Light / Solar HUD Sensor Windshield 9387626

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5945093K-2

Porsche Cayenne 92A Rear Boot Tailgate Light Wiring Harness Left N/S 7P5945093K

€23.95

Free delivery: Nov 12 – 13

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Part no. M8A2-14B518-AB

Range Rover Velar L560 Door Wiring Loom Cable Front Right O/S M8A2-14B518-AB

€32.95

Free delivery: Nov 12 – 13

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Part no. A1695450003

Mercedes W169 Fuse Box Cover Trim Panel A1695450003

€23.95

Free delivery: Nov 12 – 13

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Part no. 9294912-2

BMW F10 X5 F15 Rear Seat Compartment Screen Display 9,2" Surround Trim 9294912

€32.95

Free delivery: Nov 12 – 13

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Part no. 7P5971364CN

Porsche Cayenne S 92a Seat Wiring Harness Cable Loom Front Right O/S 7P5971364CN

€23.95

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Part no. 7491439

Tailgate Smart BMW F10 F30 F34 Mini F54 F60 Opener Control Unit Module 7491439

€28.95

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Part no. 9361116

BMW F10 LCI Body Control Module ECU Unit JBBFEIII V2 PL6 9361116

€42.95

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Part no. 82A971104K

Audi A1 GB Rear Bumper PDC Parking Sensor Wiring Loom 82A971104K

€23.95

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Part no. A2208204942-1

Seat Adjustment Motor Mercedes W220 W221 Front Right Actuator O/S A2208204942

€23.95

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Part no. 6991400

BMW I4 G26 High Voltage Battery Inverter Control Jump Start Unit 6991400

€32.95

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Part no. 7P5035503

Porsche Cayenne 92A Aerial Antenna Amplifier 7P5035503

€23.95

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Part no. A2049060503-1

Mercedes W204 Rear Light Tail Lamp Plug Socket Wiring Right O/S A2115450328

€118.95

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Part no. 6J0907159A

Seat Ibiza Mk4 Cupra Sound Impact Control Module 1.4 TSI Petrol 6J0907159A

€23.95

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Part no. 4F0907179A

Audi A6 C6 RS6 Parking Distance Module Bracket Mount Carrier 4F0907179A

€23.95

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Part no. 5K0907115-4

Volkswagen Scirocco Mk3 2.0 TSI CCZB 211HP Engine ECU Kit 5K0907115 Automatic

€474.95

Free delivery: Nov 12 – 13

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Part no. 8486997

Mini F55 F56 F57 Integrated Supply Module Electrical Control Unit Module 8486997

€23.95

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Part no. 7649090-1

Mini F54 F55 F56 F57 F60 Petrol Engine Starter Motor 7649090

€23.95

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Part no. 9381320

BMW F45 Mini F55 F56 Head Unit Basic Media DAB Headunit 9381320

€218.95

Free delivery: Nov 12 – 13

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Part no. DV4T-15K866-BJ

Ford Kuga Mk2 C520 Parking Assist PDC Control Unit Module DV4T-15K866-BJ

€37.95

Free delivery: Nov 12 – 13

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Part no. 2Q0937550B

Volkswagen Polo Gti AW1 Fusebox Power Distribution 2.0 TFSI Petrol 2Q0937550B

€23.95

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Part no. AV1T-14A584-HDF

Ford B-Max Mk1 Front Door Loom Wiring Harness Cable Left N/S AV1T-14A584-HDF

€42.95

Free delivery: Nov 12 – 13

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Part no. 8217102790

Toyota Corolla E12 Roof Wiring Loom Harness Cable Wire 8217102790

€23.95

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Part no. 1K8971148J

Volkswagen Scirocco Mk3 Tailgate Window Washer Wiring Harness Cable 1K8971148J

€47.95

Free delivery: Nov 12 – 13

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Part no. A2719060200

Mercedes W204 W211 W212 S212 Engine Starter Motor A2719060200

€23.95

Free delivery: Nov 12 – 13

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Part no. CKK72-14C336-AA

Range Rover L538 Automatic Gearbox Transmission Control Unit CKK72-14C336-AA

€227.95

Free delivery: Nov 12 – 13

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Part no. A2479000910

Mercedes W177 W247 All Wheel Drive Control Unit Module ECU SG MFA2 A2479000910

€23.95

Free delivery: Nov 12 – 13

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Part no. 2K6941005B-2

VW Volkswagen Caddy 2K Headlight Headlamp Wiring Front Left N/S 2K6941005B

€23.95

Free delivery: Nov 12 – 13

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Part no. 2Q0907685E

VW Golf Gti CD1 Blind Spot Lane Change Control Module Rear Left N/S 2Q0907685E

€104.95

Free delivery: Nov 12 – 13

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Part no. 9233009

BMW F33 F83 M4 Convertible DWA-Alarm System Module Unit ECU 9233009

€23.95

Free delivery: Nov 12 – 13

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Part no. A2054406537

Mercedes C-class S205 Seat Wiring Harness Loom Wire Front Right O/S A2054406537

€51.95

Free delivery: Nov 12 – 13

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Part no. 1Q0951172A

Volkswagen Eos Alarm Sensor Control Module Unit 1Q0951172A

€23.95

Free delivery: Nov 12 – 13

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Part no. 9316568

BMW X5 F15 X6 F16 Front Fuse Box Relay Module Control Unit 9316568

€23.95

Free delivery: Nov 12 – 13

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Part no. 6932452

BMW 5 6 Series E60 E61 E63 E64 Power Distribution Electrical Fuse Box 6932452

€23.95

Free delivery: Nov 12 – 13

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Part no. 57A971694R

Skoda Karoq Rear Door Wiring Harness Loom Cable Right O/S 57A971694R

€23.95

Free delivery: Nov 12 – 13

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Part no. J9C3-14B006-AA

Land Range Rover Velar L560 Impact Crash Sensor Front Right O/S J9C3-14B006-AA

€23.95

Free delivery: Nov 12 – 13

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Part no. 9234424

BMW F10 F11 Fuse Box Power Distribution Control Unit Box Rear 9234424

€23.95

Free delivery: Nov 12 – 13

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Part no. HK83-14A390-AAA

Range Rover Velar L560 Jaguar F-Pace X761 Fuse Box Cover Lid HK83-14A390-AAA

€23.95

Free delivery: Nov 12 – 13

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Part no. A1725402513

Mercedes SLK R172 Rear Window Heating Cable Loom Heat Wiring Harness A1725402513

€56.95

Free delivery: Nov 12 – 13

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Part no. M8D2-15B484-BB

Range Rover Evoque L551 Rear Parking Sensor Wiring Harness Loom M8D2-15B484-BB

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9325884

BMW F36 Door Cable Front Driver's Door Wiring Loom Harness 9325884

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. J8A2-14D375-CA

Land Range Rover Velar L560 Interior Wiring Lamp LED Light J8A2-14D375-CA

€23.95

Free delivery: Nov 12 – 13

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Part no. 7835892

BMW 5 6 Series E60 E61N M5 E63 M6 Cable Starter Base B+ Engine Battery 7835892

€23.95

Free delivery: Nov 12 – 13

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Part no. A9065450024

Volkswagen Crafter AdBlue Metering Control Unit ECU 2.0 TDI Diesel A9065450024

€23.95

Free delivery: Nov 12 – 13

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Part no. 7571510-5

BMW Z4 E85 Roadster 2.5i N52 177HP Engine Control Unit ECU DME 7571510 Manual

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0951253A

Seat Skoda Audi VW Polo 6R Multi Use Control Module Relay 4 Pin 645 4H0951253A

€23.95

Free delivery: Nov 12 – 13

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Part no. 03L911024A

Audi A4 B8 A5 8T 2.0 TDI Diesel Engine Starter Motor Assembly Unit 03L911024A

€56.95

Free delivery: Nov 12 – 13

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Part no. AV6N-14C237-BB

Ford Focus C-Max Mk2 Door Control Unit Module Front Left N/S AV6N-14C237-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2535409409

Mercedes W205 X253 Rear Door Wiring Harness Cable Loom Left N/S A2535409409

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EJ32-14F681-AF

Range Rover Evoque L538 Gateway Module Control Unit ECU EJ32-14F681-AF

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129000319

Mercedes A207 W212 C218 Audio COMAND Control Panel Control Unit A2129000319

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9X23-14C568-DA

Jaguar XF X250 Petrol 3.0 AJ6WG 238HP Engine Control Module ECU 9X23-14C568-DA

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465406909

Mercedes C117 X156 W176 Door Wiring Harness Rear Left Right N/O/S A2465406909

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. XFB000563-2

Land Rover Discovery 4 L319 Rear Taillight Lamp Wiring Cable Right O/S XFB000563

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0907440

Audi Q7 4L GPS Tracking Location Control Unit Module Locator 8K0907440

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A47298

BMW F74 Gran Coupé Power Distribution Box LIN Module 5A47298

€37.95

Free delivery: Nov 12 – 13

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Part no. CV4T-14D210-AA

Ford Kuga Mk1 C394 Electronic Module Mount Holder Bracket Support CV4T-14D210-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6M2T-19980-FC

Ford Galaxy Mk2 Heater Fan Control Module Unit 6M2T-19980-FC

€23.95

Free delivery: Nov 12 – 13

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Part no. A2139000718

Mercedes W213 Front Door Control Unit Module Left N/S A2139000718

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N8B2-14C239-BA

Range Rover Evoque Sport Defender L949 Heater Control Module N8B2-14C239-BA

€28.95

Free delivery: Nov 12 – 13

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Part no. DPLA-14F681-AG

Range Rover L405 Parking Disctance Control Aid Module Unit ECU DPLA-14F681-AG

€23.95

Free delivery: Nov 12 – 13

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BMW X5 Series E53 Rear Left Right Door N/O/S Wiring Cables Harness Loom 6913729

€23.95

Free delivery: Nov 12 – 13

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Mercedes C205 Rear Control Unit Module Bracket Mount Holder Support A2055456240

€23.95

Free delivery: Nov 12 – 13

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Part no. A1665450403

Mercedes W166 Junction Fuse Box Cover Housing Positive Terminal A1665450403

€28.95

Free delivery: Nov 12 – 13

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Part no. H1BT14B531CA

Ford Transit Connect Mk2 II Door Control Module ECU Front Right O/S H1BT14B531CA

€23.95

Free delivery: Nov 12 – 13

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Audi A4 S4 8K A5 S5 8T Electric Power Steering Wiring Loom Harness 8K2971111B

€37.95

Free delivery: Nov 12 – 13

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Part no. 7L6971693P

Volkswagen Touareg 7L Rear Door Wiring Loom Harness Cables 7L6971693P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Seat Control Module Mercedes A207 W207 Cabrio Rear Control Unit ECU A2078202910

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Mercedes R172 Battery Holder Mount Bracket Support A1725400340

€23.95

Free delivery: Nov 12 – 13

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Part no. 8T8971030AP

Audi A5 8T Front Door Wiring Harness Loom Cable Passenger's Side 8T8971030AP

€23.95

Free delivery: Nov 12 – 13

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Part no. 7PP035504A

Porsche Cayenne 92A Nav GPS Antenna Amplifier 7PP035504A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Vauxhall Movano C Additional Fuse Box Module Unit 2.2 Diesel B22LUE 46867943

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 914014H161

Hyundai H-1 Fuse Box Front Relay Engine Control Unit Module ECU 91401-4H161

€28.95

Free delivery: Nov 12 – 13

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Part no. 06K907309B

Audi TT FV 2.0 TFSI DKZB Engine Control Unit Module 06K907309B Automatic

€151.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971035AD

Audi A8 D4 Front Door Wiring Loom Harness Cable Driver's Side 4H0971035AD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0951253C

Seat Skoda Audi VW Polo 6R Multi Use Control Module Relay 4 Pin 646 4H0951253C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3D0972072AG

VW Phaeton 3D Electrical Steering Column Wiring Harness Loom Cable 3D0972072AG

€56.95

Free delivery: Nov 12 – 13

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Part no. JU5T-15604-BJH

Ford Fiesta St Mk8 Body Control Module BCM Fuse Box Control Unit JU5T-15604-BJH

€32.95

Free delivery: Nov 12 – 13

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Part no. 3Q0907530Q

Volkswagen VW Golf Mk7 Gateway Control Unit Module ECU GW MQB High 3Q0907530Q

€23.95

Free delivery: Nov 12 – 13

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