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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Porsche Macan 95B Headlight Control Module Unit Hella 7PP907357G

€132.95

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Part no. 7L0915138C

Audi Q7 4L Battery Mounting Bracket Part Holder 7L0915138C

€23.95

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Part no. 99661826501

Porsche Boxster 986 911 996 Alarm Siren Signal Control Tilt Relay 99661826501

€23.95

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Part no. 5Q0971230KC

Audi Q2 GA Alternator Wiring Loom Harness Cable 5Q0971230KC

€42.95

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Part no. A2055407816

Mercedes W205 2.2 Diesel Negative Earth HV Battery Cable Lead Wire A2055407816

€23.95

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Part no. HK62-15B484-DA

Range Rover Sport L494 Rear Bumper Parking Sensor Wiring Loom HK62-15B484-DA

€70.95

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BMW E90 E91 E92 N52 N52N Engine Starter Motor Valeo 7616500

€37.95

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Part no. A2124405933

Door Wiring Mercedes W212 Loom Cable Rear Left Right N/O/S A2124405933

€23.95

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Part no. 7520019

Mini Cooper One R50 Petrol W10 W11 Engine Control Unit DME 7520019 Automatic

€23.95

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Part no. A2124401851

Mercedes W212 Door Wiring Loom Cable Rear Left Right N/O/S A2124401851

€23.95

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Part no. 6C0915423

Volkswagen Polo 6R Mk5 Battery Terminal Overload Protection Fuse 6C0915423

€23.95

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Part no. DT1T-18D815-FD

Ford Transit Connect Mk2 Radio Stereo Head Unit Control Panel DT1T-18D815-FD

€80.95

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Part no. 7P6971121D

VW Volkswagen Touareg 7P Front Door Wiring Harness Passenger's Side 7P6971121D

€23.95

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Part no. 82A945093C-2

Audi A1 GB Rear LED Tail Light Lamp Wiring Plug Cable Left N/S 82A945093C

€23.95

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Part no. 1K8971104D

Volkswagen Scirocco III Rear Number Plate Wiring Harness Cable Loom 1K8971104D

€37.95

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Part no. 5Q0906121L

Volkswagen Golf Mk7 Fuel Pump Control Module ECU 2.0 TDI 5Q0906121L

€28.95

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Part no. 1454649-1

Ford Ranger Mk4 Radio CD DVD Player Head Unit Navigation UW1B66DSXD

€85.95

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Part no. 6R0959655L

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

€47.95

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Part no. 04L907309B-4

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

€132.95

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Part no. A1775407732

Mercedes W177 Engine Starter Wiring Loom Harness 2.0 Diesel 654920 A1775407732

€47.95

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Part no. 8P0971148A

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

€23.95

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Part no. 8C1T-14A073-CG

Ford Transit Mk7 Fuse Box BCM Body Control Module 8C1T-14A073-CG

€142.95

Free delivery: Sep 23 – 24

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Part no. A2035401113

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

€61.95

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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. 6995617

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

€23.95

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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. 8U0971029H

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

€47.95

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Part no. 05E907309-4

Skoda Octavia 5E 1.5 TSI DADA 150HP Engine Control ECU Kit 05E907309 Manual

€132.95

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Part no. 7848839

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

€23.95

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Part no. 9384100

Mini F54 Clubman F60 Countryman KaFAS Camera Windscreen Unit Front 9384100

€42.95

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Part no. 9387626-1

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

€23.95

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Part no. 7P5945093K-2

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

€23.95

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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

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Part no. 4H0971095AS

Audi A8 D4 Front Bumper Parking Sensor PDC Wiring Loom Harness 4H0971095AS

€94.95

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Part no. A1695450003

Mercedes W169 Fuse Box Cover Trim Panel A1695450003

€23.95

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Part no. 9294912-2

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

€32.95

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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. 7N0907530G

Volkswagen Passat B7 Gateway Control Unit Module ECU 7N0907530G

€42.95

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Part no. 9361116

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

€89.95

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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

Free delivery: Sep 23 – 24

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Part no. A2049060503-1

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

€118.95

Free delivery: Sep 23 – 24

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Part no. 6J0907159A

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

€23.95

Free delivery: Sep 23 – 24

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Part no. 4F0907179A

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

€23.95

Free delivery: Sep 23 – 24

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Part no. 5K0907115-4

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

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Part no. 8486997

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

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6R0971227

Seat Ibiza 6J Battery Wiring Cable Loom Harness 6R0971227

€37.95

Free delivery: Sep 23 – 24

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Part no. 7649090-1

Mini F54 F55 F56 F57 F60 Petrol Engine Starter Motor 7649090

€23.95

Free delivery: Sep 23 – 24

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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: Sep 23 – 24

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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. 4E0907553H

Audi A8 D3 Air Suspension Control Unit Module 4E0907553H

€47.95

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Part no. 1K8971148J

Volkswagen Scirocco Mk3 Tailgate Window Washer Wiring Harness Cable 1K8971148J

€47.95

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Part no. A2719060200

Mercedes W204 W211 W212 S212 Engine Starter Motor A2719060200

€28.95

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Part no. A2479000910

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

€23.95

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Part no. 2K6941005B-2

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

€23.95

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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: Sep 23 – 24

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Part no. 9233009

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

€23.95

Free delivery: Sep 23 – 24

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Part no. 8689723-3

BMW F20 M140i B58 340 HP ECU DDE Key Kit Petrol 8689723 6843898 Automatic

€560.95

Free delivery: Sep 23 – 24

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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: Sep 23 – 24

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Part no. 1Q0951172A

Volkswagen Eos Alarm Sensor Control Module Unit 1Q0951172A

€23.95

Free delivery: Sep 23 – 24

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Part no. 9316568

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

€23.95

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Part no. 6932452

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

€23.95

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Part no. 57A971694R

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

€23.95

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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: Sep 23 – 24

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Part no. 9234424

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

€23.95

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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: Sep 23 – 24

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Part no. A1725402513

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

€56.95

Free delivery: Sep 23 – 24

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Part no. M8D2-15B484-BB

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

€89.95

Free delivery: Sep 23 – 24

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Part no. 9325884

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

€23.95

Free delivery: Sep 23 – 24

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Part no. J8A2-14D375-CA

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

€23.95

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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

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Part no. 7H0945096J-2

Volkswagen Transporter T5 Rear Lamp Tail Light Wiring Cable Right O/S 7H0945096J

€23.95

Free delivery: Sep 23 – 24

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Part no. 52236707

Vauxhall Movano C Fuse Box Module Unit 2.2 Diesel B22LUE 52236707

€189.95

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Part no. A9065450024

Volkswagen Crafter AdBlue Metering Control Unit ECU 2.0 TDI Diesel A9065450024

€23.95

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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: Sep 23 – 24

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Part no. 4H0951253A

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

€23.95

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Part no. 03L911024A

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

€56.95

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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

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Part no. 6Q0971120C

Volkswagen Polo Mk4 5Dr Front Door Wiring Harness Cable Driver's Side 6Q0971120C

€42.95

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Part no. EJ32-14F681-AF

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

€32.95

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BMW F21 LCI Door Wiring Cables Harness Loom Front 9341000

€28.95

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Part no. A2465406909

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

€32.95

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Part no. XFB000563-2

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

€23.95

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

€23.95

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Part no. 5A47298

BMW F74 Gran Coupé Power Distribution Box LIN Module 5A47298

€37.95

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Part no. 06K907425B-7

Audi S3 8V 2.0 TFSI 300HP CJXC Quattro Engine ECU 06K907425B Automatic

€137.95

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Part no. CV4T-14D210-AA

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

€23.95

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Part no. 6M2T-19980-FC

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

€23.95

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Part no. A2139005213

Mercedes W213 Door Control ECU Module Front Left N/S A2139005213

€23.95

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Part no. N8B2-14C239-BA

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

€28.95

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Part no. DPLA-14F681-AG

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

€23.95

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Part no. 6913729

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

€23.95

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Part no. A2055456240

Mercedes C205 Rear Control Unit Module Bracket Mount Holder Support A2055456240

€23.95

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Part no. A1665450403

Mercedes W166 Junction Fuse Box Cover Housing Positive Terminal A1665450403

€28.95

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Part no. 1K0971349CB

Volkswagen Golf Mk6 Audi A3 8P Alternator Wiring Harness 2.0 TDI 1K0971349CB

€94.95

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