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 W211 Door Module Rear Left N/S Control Unit ECU A2118703385

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2544971

Ford Kuga Mk3 C482 Body Control Module BCM Unit LU5T-15604-BJGE

€47.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2170512

Ford Focus St-3 Mk3 Front Door Card Wiring Loom Cable Right O/S F1ET-14D624-RC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5Q0919275B-BLK

Audi Q2 GA Front Parking Sensor Assist Control Module Black 5Q0919275B

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 99761011001

Porsche Cayman 987C Electrical Fuse Module Box Relay Control 99761011001

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 0C8927769AG

Porsche Cayenne 92A Automatic Transmission Control Module 3.0 Diesel 0C8927769AG

€132.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G8907472

Audi A7 4G8 Dynamic Flashing LED Headlight Lamp Control Module Unit 4G8907472

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. LR058812

Land Rover Discovery L550 Front Seat Backrest Heating Mat Element LR058812

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8K0941824

Audi A5 8T A6 C6 A7 4G Relay Fuse Box Connector Socket Module Unit 8K0941824

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8576333-9

BMW F20 F30 F32 X3 F25 N47N 143HP Engine Control Module ECU DDE 8576333 Manual

€165.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9827018

BMW F70 F74 Gran Coupe B+ Power Distributor Junction Box 850-1000W 9827018

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 36444

Audi KUFATEC FISCON Hands-free Bluetooth Module Control Unit Quadlock 36444

€94.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4F0051510K

Audi Cable Adapter iPod Connection 4F0051510K

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2E0057163L

Volkswagen Crafter 2E Radio CD Player Head Unit Audio Player 2E0057163L

€208.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8M5T-14B079-AAE

Ford Focus MK3 Centre Console Wiring Loom Harness Cable 8M5T-14B079-AAE

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 46857478

Citroen Relay III Negative Battery Cable Wiring Lead 46857478

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. HPLA-19H440-BD

Land Range Rover Sport L494 Keyless Entry Start Control Unit ECU HPLA-19H440-BD

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5QF959655AT

Skoda Karoq Air Module Control Unit ECU 5QF959655AT

€222.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. R8E2-14F041-AB

Land Range Rover Evoque L551 Body Control Module BCM Unit ECU R8E2-14F041-AB

€180.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1635400341

Mercedes W163 Battery Cable Engine Block Ground Strap Wiring A1635400341

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8605144

BMW F20 F21 LCI F23 F30 F32 F33 Engine Wiring Loom Harness Cable 8605144

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. lhd-A2215403310

Mercedes W221 Battery Electrical Ground Line Wire Earth Cable A2215403310

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2129063001

Mercedes C207 W212 Radio Head Unit Navi CD DVD Player Navigation A2129063001

€118.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0862335

Audi A6 C6 Bluetooth Multimedia Control Module Unit ECU 4E0862335

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5T1T-18808-AA

Ford Transit Connect Mk1 Front Door Speaker Left Right N/O/S 5T1T-18808-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059006213

Mercedes W205 Rear Door Module Control Unit ECU Left N/S A2059006213

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 03C906016FR-2

Audi A1 8X 1.4 TFSI CAXA 122HP Engine Control ECU Kit 03C906016FR Manual

€284.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. DN1T15K600JH

Ford Transit Courier Tourneo BCM Body Control Module ECU DN1T-15K600-JH

€89.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8605456

Engine Wiring BMW F21 F30 LCI F36 N20 Loom Module Harness Cable 8605456

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9145401

BMW 5 Series E60 E60N E61 E61N LCI Airbag ECU Control Unit Module

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8572439-5

BMW F02 N57N 730Ld 258HP Diesel Engine ECU Kit DDE 8572439 FEM Key Automatic

€213.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E1910559E

Audi A8 D3 3.2 FSI Quattro BPK 260HP Engine Control ECU 4E1910559E Automatic

€132.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6F9971251B

Seat Arona FR KJ7 Rear Parking Sensor Wiring Loom Harness Cable 6F9971251B

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. C1BT-15K868-BAE

Ford Fiesta Mk7 Rear PDC Parking Sensor Wiring Harness Loom C1BT-15K868-AAE

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K0941828

Audi A6 C8 Fuse Box Relay Control Unit Module 4K0941828

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8645325

Alternator BMW F20 F21 F30 F31 LCI F32 F33 F34 Petrol Engine Unit 180A 8645325

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. DK62-13K031-AC

Range Rover Evoque L538 Headlight Control Module Unit DK62-13K031-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7H22-19G229-AA

Land Rover Discovery 3 L319 Alarm Signal Siren Module Unit 7H22-19G229-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. DH52-14183-AD

Land Rover Freelander 2 L359 Floor Console Jumper Wire MMI Cable DH52-14183-AD

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06E971821F

Audi S4 B8 S5 8F Ignition Wiring Harness Guide Trim 3.0 TFSI 06E971821F

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. F10-SCREEN

BMW F10 F11 Central Information Display On-Board Screen 10,25"

€170.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9297282-1

BMW E63 E64 Battery Power Cable Lead Positive Underfloor Red 9297282

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. DPLA-19H440-AC

Range Rover Evoque L538 Keyless Entry Control Module ECU DPLA-19H440-AC

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7804127

BMW E60 E61 LCI 520d Cable Alternator Starter Base B 7804127

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6985748

BMW 5 Series E60 E61 Centre Console Switch Centre DTC PDC 6985748

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6963651

Alarm Module BMW E81 E84 E87 E90 Ultra Sonic System Sensor 6963651

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8691844

Mini F55 F57 F60 BMW F48 F49 Engine Control Module Unit ECU 8691844

€379.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8J0907274C

Audi TT 8J Tyre Pressure Control Module Unit 4F0907274

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0035785A-1

Audi A5 8T MMI Multimedia Interface Unit Module Control ECU 8T0035785A

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T8971029AQ

Audi A5 S5 8T Front Door Wiring Loom Harness Cable Driver's Side 8T8971029AQ

€61.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2048704426

Door Module Mercedes W204 S204 Front Right O/S Control Unit A2048704426

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9284294

BMW G20 G21 G28 X1 U11 Battery Cut Off Disconnect Socket High Voltage 9284294

€32.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. N8A2-14C239-BA-1

Land Range Rover Velar L560 Climate Control Heater Unit Module N8A2-14C239-BA

€80.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0907107E

Audi A6 C7 A7 4G Image Processing Control Unit Module 4G0907107E

€99.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8577835-2

BMW F01 LCI N57N 258HP Engine Control Unit ECU DDE 8577835 Automatic

€313.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0009009639

Mercedes EQA350 H243 4matic DC Current Charge Connection Module OBL + BR293

€1,044.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8P0035535

Audi A4 B7 Amplifier Bracket Aerial Antenna Module Mount Holder 8P0035535

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1779008103

Mercedes W177 W247 Telematics Module Communication Control Unit A1779008103

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2189002002

Mercedes X218 CLS350 Automatic Trunk Lid Clossing Control Module A2189002002

€85.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4G0971679C

Audi A6 C7 A7 4G Glove Box Light Lamp Wiring Harness Loom Cable 4G0971679C

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. P1WT-14H076-CGG

VW Volkswagen Amarok Mk2 Control Unit Module ECU P1WT-14H076-CGG

€450.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 2148360

Ford Ranger Wildtrak Mk6 Alternator 210 Amp 2.2 3.2 TDCi EB3T-10300-DB

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BK21-12B681-AA

Ford Transit Custom Mk8 Glow Plug Relay Unit 2.2 Diesel BK21-12B681-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8U0907404A

Audi RSQ3 8U 2.5 TFSI CTSA 310HP Quattro Engine Control Unit ECU 8U0907404A

€1,120.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4E0907719

Audi A8 S8 D3 Alarm Module Tow Protection Signal Control Unit Block 4E0907719

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8T0959793K

Audi A4 B8 A5 8T Door Control Unit Module Front Driver's Side 8T0959793K

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9269816-1

BMW E82 Footwell Light Module Control Unit ECU FRM3R PL2 9269816

€218.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7G9N-10300-CC

Ford Fiesta Mk7 Alternator Generator 14V 120A 1.25 Petrol 7G9N-10300-CC

€51.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V0937548

Audi A3 S3 RS3 8V Bettery Terminal Fuse Box Unit 8V0937548

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9367672

Mini F55 F56 F57 Central Cover Information Instrument Radio 9367672

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9277812

BMW 2 Series F23 Convertible Rear Trunk Tailgate Antenna Aerial DAB 9277812

€67.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4H0035670R

Audi A8L 4H Multimedia Radio Sat Nav CD Player SD SIM Head Unit 4H0035670R

€455.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7575438

BMW E90 E91 E92 E93 F10 F11 Wiring Harness Valve Pressure Sensor N53 7575438

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8H22-10E889-AC

Range Rover L320 Dashboard Sat Navigation Nav Display Screen 8H22-10E889-AC

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 4K8971036K

Audi A6 C8 Door Trim Panel Wiring Harness Loom Front Left N/S 4K8971036K

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5B702D3

BMW F74 Gran Coupé Fuel Pump Module Control Unit 5B702D3

€113.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7525434

Mini R52 R53 W11 Battery Cable Wire Harness Starter Base B 7525434

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 06L911024

Audi A4 B9 A5 F5 Starter Motor DENSO 12V 06L911024

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 04L903017

Audi A4 S4 8K A5 S5 8T 8F Alternator 150A 14V 2.0 TDI Diesel CGLC 04L903017

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2469009802

Mercedes W176 Radio Control Function Button Knob Controller Unit A2469009802

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. HPLA-19C244-AB

Range Rover Sport L494 Infotaiment Module Mount Bracket HPLA-19C244-AB

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. JPLA-14A073-BB

Range Rover Sport L494 Fuse Relay Box JPLA-14A073-BB

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. M8D2-14A073-BA

Land Rover Range Rover Evoque L551 Fuse Box 2.0 Diesel Electric M8D2-14A073-BA

€42.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 6952987

BMW 5 6 Series E60 E61 E63 Driver Side Door Airbag Control Unit Module 6952987

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5A52C23

BMW X1 U11 Electric Wiring Harness Cable 5A52C23

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A1635401030

Mercedes W163 Positive Cable Alternator Battery Starter Wire Harness A1635401030

€56.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2533402600

Mercedes X253 Hybrid GLC Battery Electrical Wiring Harness A2533402600

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7PP035620B

Porsche Cayenne 92A GPS Vehicle Location Tracker Control Unit Module 7PP035620B

€37.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A0003427200

Mercedes EQA350 H243 4matic Electric Voltage Converter Module A0003427200

€408.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 9390501

BMW 3 4 Series F31 F32 F80 M3 F82 M4 LCI USB Charger Adapter Socket 9390501

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059004321

Mercedes W205 X253 Front Right O/S Door Control Unit Module A2059004321

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 7812500

BMW E60 E61 LCI N47 520d 177HP Engine Control ECU DDE Kit 7812500 Automatic

€104.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A9069001004

Mercedes Sprinter W906 Digital Tachograph Tachometer Control Module A9069001004

€279.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CV1T-14B533-AF

Ford Fiesta Mk7 Front Door Control Unit Module Passenger Side CV1T-14B533-AF

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. BV61-12A650-NF

Ford Focus Mk3 1.6 TDCi 115HP T1DA Engine Control Unit ECU BV61-12A650-NF Manual

€66.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 5N0035552K

VW Tiguan 5N Antenna Amplifier Module Control Right O/S Unit 5N0035552K

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. A2059004021

Mercedes W205 GLC X253 Door Module Control Unit Front Left N/S A2059004021

€28.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. 8V4T-14B006-AA

Ford Focus Mk3 Control Unit Crash Impact Sensor Air Module 8V4T-14B006-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

Part no. CPLA-14B006-AA

Range Rover L405 Air Module Crash Impact Sensor CPLA-14B006-AA

€23.95

Free delivery: Sep 23 – 24

If paid before 14:00

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