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 F20 F21 F22 F23 F30 F31 F32 F33 F34 F36 Cover Electronics Box 8509914

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2Q0907685G

Skoda Octavia Mk4 NX Lane Change Assist Module Control Unit Left N/S 2Q0907685G

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8F0971029AL

Audi A5 8F Front Door Electric Wiring Loom Harness Driver's Side 8F0971029AL

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 07K971082F

Audi RS3 8V 8Y RSQ3 F3 Wiring Harness Injectors 2.5 TFSI Petrol 07K971082F

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8J0971030J

Audi TT 8J Door Wiring Harness Cable Passenger Side 8J0971030J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6974890-MYS

BMW E87 E90 E91 LCI PDC Ultrasonic Parking Sensor Mysticblau Blue - A07

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GK62-18808-AB

Land Rover Range Rover Sport L494 Rear Subwoofer Bass Speaker GK62-18808-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055404306

Mercedes W205 Shock Absorber Adjustment Wire Harness Rear Right O/S A2055404306

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0971073

Audi A6 C6 Front Slam Panel Wiring Loom Harness Cable 4F0971073

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059060204-2

Mercedes W205 Front Headlight Wiring Harness Cable Plug Right O/S A2059060204

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7827899

BMW G20 G21 G60 G61 X2 U10 X1 U11 Charging Charge Cable Hybrid Plug In 7827899

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T8907461

Audi A5 8T Body Control Module BCM Controller Bracket Holder 8T8907461

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GX73-18808-DC

Land Range Rover Evoque L551 Front Door Speaker Left Right N/O/S GX73-18808-DC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T8971030AQ

Audi A5 8T Front Door Wiring Harness Loom Cable Passenger's Side 8T8971030AQ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4E0919063

Audi A1 8X A3 8V Door Light Emitting Diode Mount Bracket LED Module 4E0919063

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2382879

Mini R58 Dashboard Sat Nav Navigation Display Screen 2382879

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6923217

BMW 6 E64 E64 LCI Bracket Control Unit Vehicle Electrical System 6923217

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AH22-18D493-AC

Land Rover Discovery 4 L319 Heater Control Module ECU Unit AH2218D493AC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0035225J

Audi A1 8X Antenna Booster Amplifier Upper Rear Right O/S 8X0035225J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0937559

Porsche Cayenne 955 9PA Audi Q7 4L VW Touareg 7L Fuse Box Relay Module 7L0937559

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8707676

BMW F22 F32 F36 Body Control Comfort Module Unit 8707676

€123.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9280912

F10 F11 F20 F21 F30 F31 Front Seat Control Module Unit 9280912

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0937517B

Audi A7 4G Power Distribution Box Control Unit 4G0937517B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5H32-14633-AA

Range Rover L320 Door Wiring Loom Harness Cable Rear Left N/S 5H32-14633-AA

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BJ32-14D617-AC

Land Rover Freelander 2 L359 Door Module Passenger Side Front BJ32-14D617-AC

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR079256

Land Rover Discovery Sport L550 L494 L538 Jaguar XF Alternator GX73-10300-DE

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8J0937503

Audi TTS 8J Fuse Relay Box Bracket Mount Frame 8J0937503

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7540992-1

Alternator Generator BMW X5 E53 E60 E61 E63 E65 N62 Petrol Engine 180A C543294A

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8X0959792F

Audi A1 8X Front Door Control Module Unit Passenger Side 8X0959792F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0971693AD

Volkswagen Tiguan Mk1 Rear Door Wiring Loom Harness Left N/S 5N0971693AD

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H22-14A614-HA

Range Rover Sport L320 Air Temperature Sensor Wire Harness Cable 4H22-14A614-HA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0971349AP

VW Sharan 7N Positive Plus + Battery Alternator Wiring Harness Cable 5N0971349AP

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9242670

DVD Changer BMW F01 F10 F11 F12 F20 F30 Disc Changer Control Unit 9259800

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W6945092AA-1

Audi A5 F5 Tail Light Lamp Side Martix Cable Wire Rear Left N/S 8W6945092AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. KPLA-10C820-DB

Land Range Rover Sport L494 Hybrid Battery Hose Line Pipe Tube KPLA-10C820-DB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2601501600

Mercedes W177 Engine Wiring Loom Harness Cables M260 Petrol A2601501600

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7PP907279T

Porsche Cayenne Turbo 92a Comfort Convenience Body Control Unit ECU 7PP907279T

€370.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 0-1432785-1

TycoElectronics 12 V DC Fuse Relay Set 0-1432785-1

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9297604

BMW F12 Wire Harness Cable Loom Wiring 9297604 9313752

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1661500333

Mercedes A-Class W168 Cable Starter Line Negative Line Battery A1661500333

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DT1T-14B321-AG

Ford Transit Connect Mk2 Air Module Control Module ECU 1.5 TDCi DT1T-14B321-AG

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2139008730

Mercedes C253 W177 W205 W247 Gearbox Module Control ECU Automatic A2139008730

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AA971694CB

Volkswagen Passat B7 Door Wiring Loom Harness Rear Right O/S 3AA971694CB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0907530BE-1

Volkswagen Caddy 2k Tiguan 5N Gateway Control Module ECU Diagnosis 7N0907530BE

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9270356-1

BMW F40 Mini F55 F56 Fuse Box Power Distribution Junction Relay Unit 9270356

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 83A947356T

Audi Q3 RSQ3 F3 Door Lighting LED Module Harness Wire Front Left N/S 83A947356T

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2075400740

Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075400740

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049006007

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2049006007

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK2T-19L540-BE

Ford Transit Custom Mk8 Door Wiring Loom Harness Right O/S BK2T-19L540-BE

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2045400150

Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. JK2T-14C676-AA

Ford Ranger Mk3 Door Air Module Impact Sensor Unit Driver's Side JK2T-14C676-AA

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775407932

Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9383176

BMW F20 F30 F34 BCM FEM BSI Body Control Module Unit 9383176

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129009908

Mercedes SLK R172 Fuse Box Relay Control Unit SAM Module A2129009908

€127.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971688AC

Audi A4 B8 Door Wiring Harness Cable Loom Rear Right O/S 8K0971688AC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. XH42-10E921-AC

Land Rover Range Rover L322 Aerial Antenna Amplifier Module Ecu XH42-10E921-AC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8J0971085B

Audi TT 8J Rear Bumper Fog Light Wiring Loom Harness Cabling 8J0971085B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9199996

Holder BMW F13 TV Video Switch Control Module Unit Bracket Mount 9199996

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1Z0959772B

VW Eos 1F Golf 1K Jetta 1K Passat 3C Heated Seat Control Unit Module 1Z0959772B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0971228BH

Audi A4 B9 A5 F5 Starter Motor Battery Cable Wiring Harness 8W0971228BH

€203.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7011612

BMW 7 Series E65 E66 E67 Centre Console Coinbox With Vent Storage Compartment

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W0915459J

Audi A5 F5 S5 RS5 A4 B9 Battery Central Protection Cover Mount 8W0915459J

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2S6H-18C426-DA

Ford Fiesta St Mk5 Heater Control Temperature Harness Wire Cable 2S6H-18C426-DA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1S0919275D-MRE

Audi A5 8T PDC Parking Distance Control Sensor 1S0919275D Misano Red Pearl - Z3M

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3R0907274

Seat Exeo TPMS Tyre Pressure Monitor Module Control Unit ECU 3R0907274

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. N9D3-14D617-AA

Range Rover Velar L560 Passenger Door Control Unit Module ECU N9D3-14D617-AA

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR140109

Range Rover Evoque L551 Starter Motor 2.0 Diesel Hybrid MHEV M8D2-11001-AC

€194.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1Q0945093C-1

VW Volkswagen Eos 1F Rear Tail Light Lamp Wiring Cable Inner Left N/S 1Q0945093C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1665402950

Mercedes W166 Prefuse Box F32/4 Power Distribution Box A1665402950

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7428361

BMW G11 G20 G21 G30 G31 Charge State Display Indicator Unit LED 7428361

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. NAD101240

Land Rover Discovery 2 L318 Defender L316 Starter Motor 2.5 TD5 NAD101240

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A52C39

BMW X1 X2 Rear Door Wiring Loom Harness Cable Left Right N/O/S 5A52C39

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9241825

Central Information Display BMW F10 F11 LCI Boardmonitor Screen 7" 9241825

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0951253-1

VW Volkswagen Audi Seat Relay 449 12V 30A Unit Module 4 Pins 1K0951253

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129001829

Mercedes C207 W212 Front Right Door O/S Control Unit Module A2129001829

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059000219

Mercedes C117 W176 W205 Telematics Module Communication Control Unit A2059000219

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0971035G

Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side Cable 8T0971035G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6826201

Junction Point BMW X5 F15 X6 F16 B + Battery Power Distributor 6826201

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2215402462

Mercedes W221 SAM Fuse Box Comfort Control Module Unit ECU A2215402462

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2118705094

Mercedes C219 Sat Nav Head Unit Multimedia Screen DVD Rom A2118705094

€246.95

Free delivery: Aug 7 – 11

If paid before 14:00

Part no. 3H42-19G255-AB

Range Rover L322 Radio Aerial Antenna Amplifier Module Ecu 3H42-19G255-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W8971687M

Audi A5 F5 Sportback Door Wiring Harness Loom Rear Left N/S 8W8971687M

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 02Z911024Q

Audi A3 8V 2.0 TDI Quattro Starter Motor Engine Diesel Bosch 02Z911024Q

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9140179

BMW F10 Radio Antenna Amplifier Suppression Filter 9140179

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8W6945091AA-2

Audi A5 F5 Rear Tail Light Matrix LED Outer Left N/S Wire Harness 8W6945091AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8R0907401J

Audi A5 8T Q5 8R 3.0 TDI CCWA 240HP Quattro Engine ECU 8R0907401J Automatic

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1765404609

Mercedes W176 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 9364201

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7PP907530J

Porsche Cayenne 92A Gateway Control Module 4.8 V8 4852 Petrol 7PP907530J

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7377846-1

BMW F32 F33 F36 F80 M3 Front Headlight Headlamp Light Wiring Right O/S 7377846

€23.95

Free delivery: Aug 7 – 11

If paid before 14:00

Part no. 8MD2-14N164-AB

Range Rover Evoque L551 Fuse Box Module Wiring Loom Harness 8MD2-14N164-AB

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8573260-8

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8573260 + Key + FEM Manual

€417.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971765E

Audi A4 B8 AdBlue Tank Wiring Harness Loom Cable 8K0971765E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7164820-2

BMW E88 E93 Convertible Rollover Bar Protection System Sensor Unit Module 800137

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6842255

BMW F39 F45 Mini F56 F60 ICM Control Unit Air Module ECU 6842255

€151.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0907472

Audi A4 B8 Headlight Headlamp LED Module Control Unit 8K0907472

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A0BD89

BMW F40 Power Distribution Fuse Box LIN Control Unit Module 5A0BD89

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5A19AC1

BMW X3 G01 G20 G21 G30 G31 Air Module Control Unit 5A19AC1

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6957347

BMW 6 Series E63 E64 F06 F12 F13 Aerial Antenna Amplifier Module Left N/S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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