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 Media Interface Cable MMI Apple iPod 30 Pin 5N0035554D

€23.95

Free delivery: Sep 15 – 16

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Part no. 7L0971537

Porsche Cayenne 9PA Negative Battery Terminal Cable Wiring Loom 7L0971537

€28.95

Free delivery: Sep 15 – 16

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Part no. 02Z911024L

VW Volkswagen Golf Mk7 1.6 TDI CLHA Diesel Engine Starter Motor 02Z911024L

€23.95

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Part no. 9279391

BMW 5 G11 G30 M5 Door Crash Sensor Front 9279391

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BV21-12A650-ACD-1

Ford Fiesta Mk7 1.4 TDCI 70HP KVJA Engine Control ECU BV21-12A650-ACD Manual

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4N0955557A

Audi A6 C8 A7 C8 Door Crash Impact Sensor Front Left N/S Side 4N0955557A

€23.95

Free delivery: Sep 15 – 16

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Part no. 02Z911024H-1

Seat Ibiza IV VW Polo 6R Fabia 5J 1.2 TDI Diesel Engine Starter Motor 02Z911024H

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BV6T-14297-AAG

Ford Focus Mk3 Windscreen Heated Washer Jet Wiring Harness Cable BV6T-14297-AAG

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8583423

Mini D R60 R61 ALL4 N47N 112HP Engine ECU Control Unit DDE 8583423 Manual

€94.95

Free delivery: Sep 15 – 16

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Part no. 03L906019AG-1

Audi A6 C6 2.0 TDI CAHA 170HP Engine ECU Kit 03L906019AG Ignition + Key Manual

€189.95

Free delivery: Sep 15 – 16

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Part no. AG9N-10723-AC

Land Rover Freelander 2 L359 HV Battery Tray Holder Bracket AG9N-10723-AC

€23.95

Free delivery: Sep 15 – 16

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Part no. 7P6035552

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Left N/S 7P6035552

€23.95

Free delivery: Sep 15 – 16

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Part no. 9230404-1

BMW X1 E84 Rear Bumper PDC Cables Wiring Harness Loom 9230404

€42.95

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Part no. 5A898F2

BMW F70 F74 F78 Parking Brake Wiring Harness Cable Rear 5A898F2

€42.95

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Part no. 8662843-1

Mini Cooper F55 B38 136HP Engine Module ECU DME Kit 8662843 Manual

€664.95

Free delivery: Sep 15 – 16

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Part no. 9267467

BMW F13 Body Control Module Electronic Junction Box JBBFE 3 PL6 V3 9267467

€80.95

Free delivery: Sep 15 – 16

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Part no. A6519004500

Mercedes W205 Engine Control ECU Unit 204HP Diesel Automatic Gearbox A6519004500

€42.95

Free delivery: Sep 15 – 16

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Part no. 9367700

BMW X6 F16 PDC Bumper Park Assist Wiring Harness Loom 9367700

€66.95

Free delivery: Sep 15 – 16

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Part no. 7P5882771

Porsche Cayenne 92A Front Seat Pump Ventilblock Unit 7P5882771

€23.95

Free delivery: Sep 15 – 16

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Part no. 7P0971349B

Porsche Cayenne 92A Minus Negative Wiring Loom Harness Cable 7P0971349B

€23.95

Free delivery: Sep 15 – 16

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Part no. N8B2-19L300-PF

Land Rover Defender L663 Sat Nav Multimedia Head Unit N8B2-19L300-PF

€569.95

Free delivery: Sep 15 – 16

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Part no. 8571036

Mini F54 F55 F56 F57 Wiring Harness Engine Supply Module 8571036

€23.95

Free delivery: Sep 15 – 16

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Part no. A1669003903

Mercedes GLE W166 GLS X166 Air Module Unit Control ECU SRS A1669003903

€113.95

Free delivery: Sep 15 – 16

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Part no. 9207515

BMW X1 E84 Battery Cable Wire Lead Positive 9207515 61129207515

€56.95

Free delivery: Sep 14 – 16

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Part no. A2036901430

Mercedes C CLC Class CL203 W203 Rear SAM Unit Fuse Box Trim Cover A2036901430

€23.95

Free delivery: Sep 15 – 16

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Part no. 8573257

BMW F20 F30 F32 120d 320d 420d N47N 184HP Engine Module ECU DDE 8573257 Manual

€113.95

Free delivery: Sep 15 – 16

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Part no. 1398342080

Citroën Relay III Alarm Buzzer Wiring Harness Cable Plug 1398342080

€23.95

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Part no. 9361601

BMW Active Tourer F45 Door Wiring Loom Harness Cable Rear Right O/S 9361577

€32.95

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Part no. 6Q0951253

Volkswagen Polo Mk4 Passat B7 Additional Brake Light Relay 4 Pin Black 6Q0951253

€23.95

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Part no. A1329060026

Smart Fortwo 451 Starter Alternator 120A 14V 1.0 M132 Petrol A1329060026

€379.95

Free delivery: Sep 15 – 16

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Part no. 8R0907461A

Audi Q5 8R Comfort Module Unit Bracket Holder Mount Carrier 8R0907461A

€23.95

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Part no. 8K0971035AR

Audi A4 B8 Front Driver's Door Wiring Harness Loom Electrical Cable 8K0971035AR

€23.95

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Part no. 9190107

BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190107

€32.95

Free delivery: Sep 15 – 16

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Part no. 1742905

Ford Focus Mk3 Earth Cable Strap Wire Ground Cable 1.6 Petrol AV6T-14324-DAF

€23.95

Free delivery: Sep 15 – 16

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Part no. 09D927750LJ

Porsche Cayenne 955 Automatic Gearbox Transmission Module 3.0 TDI 09D927750LJ

€113.95

Free delivery: Sep 15 – 16

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Part no. L1TT19K351AA

Ford Puma ST CF7 Aerial Antenna Amplifier Control Module Unit L1TT-19K351-AA

€23.95

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Part no. 897410D020

Toyota Yaris XP10 Central Door Locking Module Control Unit ECU 897410D020

€23.95

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Part no. 5WA959436B

Audi A3 8Y Volkswagen Golf Mk8 Keyless Entry Module Control Unit ECU 5WA959436B

€23.95

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Part no. A2469004313

Gearbox Module Mercedes W176 Automatic Transmission Unit ECU A2469004313

€23.95

Free delivery: Sep 15 – 16

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Part no. 0C8927755C

VW Touareg 7P Automatic Transmission Module Control Unit ECU 3.0 TDI 0C8927755C

€142.95

Free delivery: Sep 15 – 16

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Part no. CV1T-14B532-BC

Ford B-Max Door Control Unit Module Rear Left Right N/O/S CV1T-14B532-BC

€23.95

Free delivery: Sep 15 – 16

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Part no. FK72-14C676-AA

Land Rover L550 Jaguar XE F-Pace Air Module Crash Impact Sensor FK72-14C676-AA

€23.95

Free delivery: Sep 15 – 16

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Part no. LR000916

Range Rover Evoque L538 Sun Sensor Control Unit 8624285

€23.95

Free delivery: Sep 15 – 16

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Part no. 8V4971036Q

Audi A3 8V Sportback Front Passenger's Door Loom Wiring Harness 8V4971036H

€23.95

Free delivery: Sep 15 – 16

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Part no. 7622995

Cable Alternator Starter BMW F20 F21 F30 F31 N55 Battery Wiring Harness 7622995

€32.95

Free delivery: Sep 15 – 16

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Part no. 9286365

BMW X1 X2 Series F39 F48 Antenne AM Antenna Amplifier Cable 9286365

€23.95

Free delivery: Sep 15 – 16

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Part no. A2465452840

Mercedes-Benz A B W176 W246 Control Module Housing Bracket Mount A2465452840

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K5945096D-2

Audi A4 B8 Saloon Rear Tail Light Lamp Wiring Harness Cable Right O/S 8K5945096D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8U0945093M-1

Audi Q3 8U Tail Light LED Lamp Wiring Loom Plug Rear Left N/S Outer 8U0945093M

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8516739-7

Mini R60 Cooper SD ALL4 N47N 143HP Engine Control Unit ECU DDE 8516739 Automatic

€66.95

Free delivery: Sep 15 – 16

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Part no. 8513249-1

BMW X3 F25 Engine ECU Kit DDE CAS4 N47N 20dX 184HP Manual 8513249 Keys + Lock

€284.95

Free delivery: Sep 15 – 16

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Part no. F30-SCREEN-2

BMW F30 F31 Dashboard Dash Central Information Screen Display Android 10.25"

€237.95

Free delivery: Sep 15 – 16

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Part no. 7561834-18

BMW E87 E90 118i 318i Engine N46 129HP ECU KIT DME 7561834 CAS2 + Key Automatic

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2188205061-1

Mercedes C218 Front Headlight Wiring Harness Cable Right O/S A2188205061

€23.95

Free delivery: Sep 15 – 16

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Part no. A2118705726

Air Module Mercedes W211 C219 Air System Control Unit ECU A2118705726

€23.95

Free delivery: Sep 15 – 16

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Part no. 8V41-13A602-AD-2

Ford Kuga Mk1 Rear Tail Light Lamp Inner Right O/S Wire Cable 8V41-13A602-AD

€23.95

Free delivery: Sep 15 – 16

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Part no. 9359248

BMW MINI Cooper One F55 Cable Harness Door Right O/S Loom Driver Side 9359246

€23.95

Free delivery: Sep 15 – 16

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Part no. K8D2-10757-A

Range Rover Evoque L551 Battery Box Tray Cover Panel Side Front K8D2-10757-A

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9136726

BMW Mini Cooper One R55 R56 Multifuse B Battery Power Distributor 9136726

€23.95

Free delivery: Sep 15 – 16

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Part no. 7953081

BMW X1 U11 Battery Cable Negative Terminal PHEV Earth Cable Wiring PHEV 7953081

€23.95

Free delivery: Sep 15 – 16

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Part no. 9260902

BMW E81 E82 Driver's Door Wiring Loom Harness Cables 9260902

€23.95

Free delivery: Sep 15 – 16

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Part no. 9281068

Antenna Receiver BMW F33 F83 M4 Convertible Aerial DAB Unit 9281068

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9441865

Head Unit BMW F20 F21 F22 F30 F31 LCI Radio CD Player Navigation GPS 9441865

€170.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK21-13C148-AB

Ford Transit Custom Mk8 Headlight Control Module Unit BK21-13C148-AB

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 05E907309H-2

Skoda Karoq NU7 1.5 TSI DPCA 150HP Engine Control Module Kit 05E907309H Manual

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0909605C

Volkswagen Golf Mk5 Air Module Control Module ECU 1K0909605C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 0AD927755BT

Porsche Cayenne 9PA Gearbox Control Unit Module Controller ECU 0AD927755BT

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0971558C

Volkswagen Golf Mk7 Front Door Wiring Loom Harness Passenger Side 1K0971558C

€23.95

Free delivery: Sep 15 – 16

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Part no. 9672467180

Citroën C4 Grand Picasso Front Door Wiring Harness Passenger Side 9672467180

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8P7907115F-1

Audi A3 8P 1.8 TFSI BZB 160HP Engine Control Unit ECU 8P7907115F Manual

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9354758

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK Mid 9354758

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0937615C

Audi A3 8V Fuse Relay Box Module Electrical Control Unit 5Q0937615C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4H0907401-1

Audi A8 4H 3.0 TDI CDTA 250HP Quattro Engine ECU Kit 4H0907401 BCM + Key + Lock

€379.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P6907530F

VW Volkswagen Touareg 7P MK2 Gateway Control Unit Module ECU 7P6907530F

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0941823E

Audi A4 B9 A5 F5 Power Distribution Fuse Box Battery Unit 8W0941823E

€99.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DH22-19C166-CA

Land Rover Discovery 4 L319 USB AUX Multimedia Socket Port DH22-19C166-CA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2125406250-1

Mercedes W212 SAM Fuse Prefuse Box Relay Junction Control Unit A2125406250

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7811700-3

BMW E60 LCI E87 E90 120d 320d 520d N47 177HP ECU KIT DDE 7811700 CAS3 Key Manual

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2513200158

Mercedes W251 W906 Valve Block Air Suspension Control Unit Module A2513200158

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 30327N

BMW F20 F21 F30 F34 Diesel Engine Starter Motor 30327N

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8507918

BMW F20 F21 N47S1 Engine Wiring Harness Injector Module Loom Cable 8507918

€80.95

Free delivery: Sep 15 – 16

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Part no. 5J0035161D

Skoda Fabia 5J CD Player Audio Stereo Radio Head Unit 5J0035161D

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K8919465A

Volkswagen Caddy 2K Parking Aid Sensor PDC Control Unit Module ECU 1K8919465A

€32.95

Free delivery: Sep 15 – 16

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Part no. 5NA971395

Volkswagen Tiguan 5N Door Light Wiring Harness Front Passenger Side 5NA971395

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AM21-13404-AG-2

Ford S-Max Mk1 Rear Tail Light Lamp Wiring Cable Outer Right O/S AM21-13404-AG

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9347964

BMW F01 F02 F03 F04 F10 F12 F13 F30 F31 F32 F34 TV Module Control Unit 9347964

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 99161814505

Porsche 718 Boxster 982 Cayman 981 Parking Brake Control Unit Module 99161814505

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9190110

BMW Z4 E89 Battery B+ Engine Compartment Terminal Point 9190110

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 99661230310

Porsche Boxster 986 Wiring Cables Harness Loom Front Left N/S 99661230310

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2198203626

Mercedes CLS W219 Door Module Rear Right O/S Control Unit A2198203626

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5M0035577G

Volkswagen Golf Plus 5M Aerial Antenna Boost Amplifier 5M0035577G

€23.95

Free delivery: Sep 15 – 16

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Part no. A1645460461

Mercedes ML W164 Cable Duct Wiring Guide Bracket Trim Right O/S A1645460461

€28.95

Free delivery: Sep 15 – 16

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Part no. 6957123

BMW 3 Series E92 Front Left N/S Door Wiring Cables Harness Loom 6957123

€23.95

Free delivery: Sep 15 – 16

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Part no. 6H2214B254AAW

Land Rover Discovery 4 L319 Front Seat Position Sensor Left N/S 6H22-14B254-AAW

€28.95

Free delivery: Sep 15 – 16

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Part no. H1BT-18K811-HF

Ford Transit Custom Mk8 MMI Volume Radio Head Unit Control Panel H1BT-18K811-HF

€42.95

Free delivery: Sep 15 – 16

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Part no. A1679005218

Mercedes W167 W177 Radio Stereo Nav Navigation Head Unit High A1679005218

€450.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 0332019103

Porsche Cayman 987 Relay Bosch 12v 0332019103

€23.95

Free delivery: Sep 15 – 16

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Part no. A2075451740

Mercedes-Benz A207 W207 Cabrio Control Unit Module Bracket Holder A2075451740

€23.95

Free delivery: Sep 15 – 16

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Part no. 9289548

BMW F31 F31 LCI Trunk Lid Baggage Door Wire Wiring Cable Harness Loom 9289548

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

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