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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Range Rover Discovery Sport L550 Fuse Box Control Module CPLA-14Q073-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8612582

BMW F45 Mini F60 HV Accumulator Battery Positive B+ Cable 8612582

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 83A971085S

Audi Q3 F3 Front Bumper Wiring Harness Loom 83A971085S

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8573257

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

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0907064JF

Audi A4 B8 A5 8T Q5 8R Body Control Module BCM Unit ECU 8K0907064JF

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G5971035CA

Audi S6 C7 Door Wire Wiring Harness Loom Cable Front Driver Side 4G5971035CA

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009054807

Mercedes W118 W177 W206 W247 NOX Sensor A0009054807

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8507918

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

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0971235B

Porsche Cayenne High Voltage Wiring Harness Earth Line 7P0971235B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1388277

BMW E39 E46 E60 E61 E83 E90 E91 Switch Glove Box Light

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8589168

Alternator Harness BMW X3 G01 X4 G02 30dX 40dX B57 Cable Base B+ Loom 8589168

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906022FL

Audi A6 C6 3.0 TDI 233HP Diesel Engine Control Unit ECU Kit Module 03L906022FL

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2218705687

Mercedes W221 Linguatronic Control Module Unit ECU English Version A2218705687

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9286952

BMW X3 F25 X4 F26 Central Gateway Control Module ECU Unit 9286952

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. X3 E83 Rear Wiring Loom PDC-1

BMW X3 Series 1 E83 Rear Bumper Wiring Loom PDC Harness Parking Sensor

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7199894-3

BMW E90 E91 LCI Front Fog Light Wiring Harness Cable Plug Right O/S 7199894

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1775401758

Mercedes W118 W177 W247 Starter Alternator Wiring Loom Harness Cable A1775401758

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9488417

Mini F60 BMW F48 SCR AdBlue Module Control Unit 9488417

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048210197

Door Cable Guide Mercedes W204 Front Wiring Loom Harness Channel A2048210197

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6878191

Air Module BMW F01 F02 LCI F10 F11 F13 ECU ICM Control Unit 6878191

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2135401217

Mercedes W213 OM642 Diesel Engine Alternator Wiring Loom Harness A2135401217

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048701126

Mercedes S204 Door Module Rear Left N/S Control Unit ECU A2048701126

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8U0955559

Audi A1 8X A3 8V Windscreen Rain Sensor Control Unit 8U0955559

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7601305

BMW F10 F11 LCI F13 N63 N63N Petrol Water Pump Adapter Lead Cable Wiring 7601305

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8612583

BMW F45 Mini F60 HV Accumulator Battery Positive B+ Cable Ground 8612583

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9384100

Mini F54 Clubman F60 Countryman KaFAS Camera Windscreen Unit Front 9384100

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8506434-4

BMW E81 E84 E87 E90 LCI 18d 118d 318d N47 ECU Kit DDE 8506434 CAS3 Key Automatic

€251.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8R0907468T

Audi Q5 8R Gateway Module Control Unit ECU 8R0907468T 8R0907468C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2219002802

Mercedes W221 Radio Control Operating Unit Card Reader CD Player A2219002802

€360.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059067200

Mercedes W205 S205 W213 Fuse Box Front Relay Control Unit Module A2059067200

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2229004220

Mercedes GLC X253 Communication Module LTE Telephone Bluetooth A2229004220

€151.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1Q0959655A

VW Volkswagen Eos 1F Air Module Control Unit ECU 1Q0959655A

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8R0971036E

Audi Q5 8R Front Door Wiring Harness Cable Loom Passenger Side 8R0971036E

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8G91-12A650-HC

Ford Galaxy Mk2 Engine Control Unit ECU 140HP 8G91-12A650-HC Automatic Gearbox

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8517727-6

Mini Cooper SD ALL4 R56 LCI R60 143HP N47N Engine ECU Kit DDE 8517727 Manual

€203.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9360371

BMW X6 F16 Fuse Relay Box Control Unit Power Distribution 9360371

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1644400937

Mercedes ML W164 Rear Bumper PDC Wiring Parking Sensor Loom Harness A1644400937

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CPLA-19H422-AC

Range Rover L405 Front Bumper 360 Camera Control Unit CPLA-19H422-AC

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AH42-15K603-AA-1

Range Rover Sport L494 Aerial Antenna Module Keyless Unit X2 AH42-15K603-AA

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1525794

Ford Mondeo Mk4 Starter Motor 12V 2.0L Petrol 6G9N-11000-AB 1525794

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8387568

BMW 7 Series E65 E66 Battery B Engine Compartment Terminal Point 8387568

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6772742

BMW 3 4 Series F80 M3 F82 M4 Control Unit Active Sound Design 2622362

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7605478

BMW 1 3 Z4 Series F20 F30 E89 Petrol Alternator 170A 7605478

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8617722

Wiring Harness BMW F48 Mini F55 F56 B38 Petrol Engine Servotronic Module 8617722

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129008729

Mercedes W176 W207 W212 Keyless Module ECU Door Lock Control Unit A2129008729

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6907329

BMW E65 Door Cable Guide Rear Left N/S Wiring Loom Bracket Trim Cover 6907329

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3AA919475D

VW Volkswagen Touran 1T Tiguan 5N Parking Sensor Control Module ECU 3AA919475D

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5K0837202AD

Volkswagen VW Caddy Radio Remote Control Alarm Key Fob Control Unit Module

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059001513

Mercedes W205 S205 C205 Air Conditioning Control Module unit ECU A2059001513

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V4971693B

Audi A3 RS3 8V Rear Door Wiring Loom Harness Left Right N/O/S 8V4971693B

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5N0035552K

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9665162580

Peugeot Partner Citroen Berlingo 1.6 HDI Engine Wiring Cable Bracket 9665162580

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9797876

BMW X1 U11 Battery Trim Cover Mount Bracket 9797876

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1J0937550AB

Audi A3 8L VW Golf Mk4 Battery Fuse Box Terminal Cover Panel 1J0937550AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0044460310

Mercedes W204 C207 Eletronic Transmission Unit Gearbox Control SBW A0044460310

€199.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 02Z911024L

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

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. P0148459-IB1

Mini Cooper One 1 R50 Fuel Filler Cover Fill In Flap Indi Blue Metallic 862

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7572873

BMW Z4 E85 E86 Battery Holder Hold Down Bracket 7572873

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L5907160

Porsche Cayenne 9PA Relay Module 6 Pin 462 7L5907160

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2035402206

Mercedes W203 Diesel Engine Starter Alternator Electrical Cable A2035402206

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9307421

Camera Control Unit BMW F20 F21 F30 F31 KaFAS 2 Camera Module ECU 9307421

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 31268907

Land Rover 4 L319 Heated Seat Controle Module Front Left N/S 6G9N-14C724-BD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0-431-97

Durite 175A Battery Cable Wiring Harness Connector Cabling 0-431-97

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 91127929

BMW E90 Mekede Head Unit Android Radio Multimedia Infotainment 10" Screen 9M95S

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2219005300

Mercedes W221 Parktronic System Control Unit Module A2219005300

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8S0035020B

Audi TT 8S FV Audio Multimedia Radio CD Player MIB2 Head Unit 8S0035020B

€569.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5H0947145C

Volkswagen Golf GTI CD1 Led Ambient Lighting Dashboard Connector 5H0927103K

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669001410

Mercedes ML W166 SAM Control Signal Acquisition Module ECU A1669001410

€222.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. HPLA-14N030-AB

Land Rover Range Rover Mk4 L405 Rear Fuse Box Board 3.0 TDV6 HPLA-14N030-AB

€61.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9240647

BMW F02 Television Tuner TV Receiver Control Unit Module 9240647

€142.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0907801C

Porsche Cayenne 958 92A Parking Brake Control Unit Module 7P0907801C

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6960428

BMW 3 5 6 Series E60 E61 E63 E64 E90 E91 FBAS Analog Video Module Unit 6960428

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. J8A2-16C826-AB

Land Range Rover Velar L560 Bonnet Gas Strut Left Right N/O/S J8A2-16C826-AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA907007K

Volkswagen Golf Cd1 Mk8 Climate Control Module ECU 2.0 Diesel 5WA907007K

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6935667-1

BMW Z4 Series E85 Roadster Battery Lead Positive Cable Plus Pole 6935667

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9335291

BMW F20 Driver Side Door Cable Harness Wiring 9335291

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5WA907007AC

Volkswagen Golf Mk8 Air Conditioning A/C Control Unit Module 5WA907007AB

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9311113

Mini R55 R56 R57 LCI R60 R61 Navigation Head Unit CHAMP 2 Sat Nav DAB 9311113

€104.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P0971225C

VW Touareg 7P Porsche Cayenne 92A Negative Battery Cable Wiring Loom 7P0971225C

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0907361C-1

Seat Ibiza Mk4 Audi A3 8V TT FV Fuse Box Control Module Relay Box 5Q0907361C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7598857

Mini R55 R56 Cooper S EGS Module Automatic Gearbox ECU Control Unit 7598857

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2055403335

Mercedes W205 C253 X253 Footwell Light Wiring Cable Front Left N/S A2055403335

€66.95

Free delivery: Aug 5 – 10

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: Aug 5 – 10

If paid before 14:00

Part no. 8625074

Engine Wiring Mini F55 F56 Cooper S Petrol B46 B48 Cable Loom Harness 8625074

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2049060305-1

Mercedes W204 SAM Module Control Unit Rear A2049060305

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9188377

BMW F01 KaFAS Camera Front Windscreen Lane Departure Camera Module 9188377

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 06M907309H-1

Audi RS5 F5 2.9 TFSI DECA Quattro 450HP Engine Unit ECU Kit 06M907309H Automatic

€788.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. MB3T-14B060-ABE-1

VW Volkswagen Amarok NF Engine Wiring Loom Harness Cable MB3T-14B060-ABE

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6858698

BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6858698

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8582280-1

BMW F20 F21 116d N47N 116HP Engine Control ECU Kit DDE 8582280 Manual

€303.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9384687

BMW F46 KaFAS Camera Front Windscreen Parking Camera Module Unit 9384687

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0959595E

Audi A3 8V Door Control Module Unit ECU Rear Left Right N/O/S 5Q0959595E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-13A444-ABC

Land Rover Discovery Sport L550 Rear Seat Folding Wiring Cable FK72-13A444-ABC

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3Q0907530AG

Audi Q2 Q3 F3 1.5 TFSI Gateway Control Unit Module ECU 3Q0907530AG

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5K0971104C

Volkswagen Golf GTI Mk7 Rear Bumper PDC Sensors Wiring Loom Harness 5K0971104C

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. XH42-18C847-BB

Range Rover L322 Aerial Antenna Amplifier Control Unit Module XH42-18C847-BB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W8947356

Audi A5 F5 Front Door Card Panel LED Module Light Unit Wiring Harness 8W8947356

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9270035

Antenna Aerial Amplifier Mini F55 F56 F60 Rear AM/FM DAB 9270035

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1388911-1

BMW E36 E38 E85 Mini R52 R57 2x Change-Over Contact Relay Violet Set 1388911

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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