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 LCI REM Rear Electronic Module Fuse Box Control 6809051

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6519003403-1

Mercedes W906 314 CDI OM651 Engine Module ECU Kit A6519003403 Automatic

€474.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9381837

BMW X1 F48 Mini F55 F56 Air Module Control Unit ECU 9381837

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0907468B

Audi Q7 4L Gateway Module Central Control Unit 4L0907468B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059006615

Mercedes W205 Windscreen Rain Sensor Front Control Unit A2059006615

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8678964

BMW X1 F48 Mini Cooper F55 F56 Engine Gearbox Module Wiring Cable Loom 8678964

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6862808

BMW F10 F11 F12 X3 F25 Electric Parking Brake Control Unit EMF Module 6862808

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0907637A

Audi A5 8T Acceleration Yaw Rate Sensor Module Control Unit ECU 8K0907637A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9276009

BMW F07 GT Rear Antenna Aerial Amplifier AM/FM DABIII FBD2 868MHZ 9237057

€180.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9212916

BMW 5 7 X5 E70 F01 F02 F10 F11 Rain / Light / Solar Fogging Sensor 9212916

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4E0919887M

Sat Nav Audi S8 D3 A6 C6 DVD Drive Navigation Control Unit 4E0919887M

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3455305

Mini R57 R57N R58 R59 DWA-Alarm System Relay ECU 3455305 65753455305

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6954298

BMW E81 E87 E90 E91 Adapter Lead Medium Range Loud Speakers 6954298

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2622892

BMW 1 2 Series F20 F21 F22 F23 Control Unit Module Active Sound Design 2622892

€85.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4515420118

Smart Fortwo 451 Yaw Rotation Rate Sensor Acceleration A4515420118

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1779005509

Door Module Mercedes C118 W177 H243 Rear Left N/S Door Control A1779005509

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0015424623

Mercedes A207 W204 W212 Front Parking PDC Display Panel A0015424623

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971104AF

Audi A5 8T 5 Door Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104AF

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0959792B

Audi Q7 4L Door Control Unit Module ECU Passenger Side 4L0959792B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9286953

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9286953

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9285504-1

BMW X5 F15 X6 F16 B + Battery Power Distributor 9285504

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8R0971035AM

Audi Q5 8R Door Wiring Loom Harness Electrical Cable Driver's Side 8R0971035AM

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DK62-14B687-DD

Land Rover Range Rover L405 Seat Wire Loom Harness Rear Left N/S DK62-14B687-DD

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1648205389

Mercedes ML W164 Aerial Antenna Amplifier Unit Module A1648205389

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6934095

BMW 7 Series E65 E66 Door Wiring Harness Rear Right Left N/O/S

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2124405533

Mercedes W212 Wiring Loom Cable Door Front Left Right N/O/S A2124405533

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2054400534

Mercedes C205 Bumper PDC Wiring Loom Rear Parking Sensor A2054400534

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 83A907428C

Audi RSQ3 F3 Reversing Camera Control Unit Module 83A907428C

€360.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2N0915181G

Volkswagen Crafter Mk2 Negative Minus - Battery Terminal Wiring Cable 2N0915181G

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7P6971694F

VW Volkswagen Touareg 7P Door Wiring Harness Rear Left Right N/O/S 7P6971694F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055407412

Mercedes W205 Alternator Ground Cable Wiring Loom A2055407412

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775402500

Mercedes W177 W247 Battery Cable Negative Lead Terminal Harness A1775402500

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2475451000

Mercedes W177 W247 Battery Bracket Battery Mount Holder Trim A2475451000

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6G9T-14B192-BA-1

Ford Galaxy Mondeo Transit Relay 4-Pin Black FoMoCo Unit SET X2 6G9T-14B192-BA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775405329

Mercedes W177 Positive Battery Cable Wiring A1775405329

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9231174

BMW 3 4 F30 F32 Touring Amplifier Rear Window Antenna Diversity 9231174

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8576333-8

BMW F20 F30 F32 xDrive N47N 163HP Engine Control ECU Kit DDE 8576333 Manual

€165.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1695403905

Mercedes-Benz A B W169 W245 Door Cable Harness Wiring Loom Rear Left Right

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P4971693T

Audi A3 8P Door Wiring Harness Loom Cables Rear Left Right N/O/S 8P4971693T

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G8959795G

Audi A6 C7 Rear Door Control Module Unit ECU Left Right N/O/S 4G8959795G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8678960

Mini Cooper S F55 F56 F57 F60 Valvetronic Wiring Cable Loom Harness 8678960

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2129003922-1

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003922

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2669000200

Mercedes W245 B180 266.940 Engine Control Module ECU A2669000200 Automatic

€222.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7L0971767A

Porsche Cayenne 9PA Windscreen Washer Wiring Loom Cable 7L0971767A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055404045

Mercedes S205 Rear Parking PDC Wiring Harness Loom A2055404045

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2709000900-9

Mercedes W176 A45 4Matic M133.980 381HP Engine Control ECU A2709000900 Automatic

€427.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2758591-2

Mini R55 R56 Bi-Xenon Headlight Lamp Left N/S Harness Wiring Cable 2758591

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0962131

Antenna Control Module Audi Q3 RSQ3 F3 Line Keyless Entry 5Q0962131

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K0971727

Audi A6 C8 Pressure Sensor Wiring Loom Harness Cable 4K0971727

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9326404

BMW F34 Front Door Wiring Loom Harness Cable Driver Side 9326404

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0907355B-1

Audi Q5 8R Adblue Metering Control Module Unit ECU 4L0907355B

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9314399

BMW X5 F15 Front Seat Wiring Loom Harness Cable Right O/S 9314399

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V4T-14297-AAB

Ford Kuga C394 Heated Windscreen Wire Harness Cable Loom 8V4T-14297-AAB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. YML500463

Land Rover Discovery 3 L319 Electric Wiring Harness Cable YML500463

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V41-13D155-BF-2

Ford Kuga Mk1 Xenon Headlight Lamp Left N/S Wire Harness Cable 8V41-13D155-BF

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR047579

Range Rover Evoque L538 Alternator 14V 215A 2.2 TDCI Diesel LR047579

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2048703996

Mercedes W204 Multimedia Audio CD Player Radio Head Unit A2048703996

€322.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8661796

BMW G11 G12 G20 G21 G30 G31 High Voltage Plug Cover Housing 8679679

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5N0035342G-1

VW Scirocco Mk3 Polo Mk5 Multimedia Electronic Control Module ECU 5N0035342G

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6960219

Airbag Module BMW E65 E66 Airbag A-Pillar Sensor Left N/S Control Unit 6960219

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8865047

Bmw X1 U11 Low Voltage Wiring Harness Cable Loom 8865047

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0055461340-1

Mercedes Vito W447 Energy Distributor Plug Module A0055461340

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8V4971030H

Audi S3 8V 5Dr Front Door Wiring Harness Loom Passenger Side 8V4971030H

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0951253

VW Volkswagen Scirocco Mk3 Power Starter Motor Relay 12V 50A Plug 7N0951253

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0971250

Skoda Octavia II Negative Battery Terminal Cable Wire Wiring 1K0971250

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9067601304

Mercedes-Benz Sprinter W906 Front Right Door O/S Handle Bowden Pull Cable

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1698201085

Mercedes W245 ECU Control Unit Sensor Air Module A1698201085

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1779007716

Mercedes W177 Front Door Control Module Left Right N/O/S Unit ECU A1779007716

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BJ32-14D618-AC

Land Rover Freelander 2 L359 Door Control Module Driver's Side BJ32-14D618-AC

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2115405645

Mercedes W211 Central Gateway Module Control Unit A2115405645

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BJ32-13K031-AC-1

Range Rover Evoque L538 Headlight Control Module Unit BJ32-13K031-AC

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06N907309A-1

Audi A4 B9 8W 35 TFSI DMSB 150 HP Engine ECU Kit Body + Key 06N907309A Automatic

€379.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1765405508

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405508

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9257494

BMW X3 F25 Stereo Radio Sat Nav Head Unit CD Player 9257494

€94.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M0906093N

Audi A4 S4 B9 Petrol Fuel Pump Control Unit Module ECU 4M0906093N

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059002011

Mercedes W205 Rear Door Control Module Unit Right O/S ECU A2059002011

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0907063AJ

Audi A5 8T Body Control Comfort Unit Module BCM Unit ECU 8K0907063AJ

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 02Z911023R

Audi A3 8P VW Golf 5k Starter Motor 1.4 TFSI CAXC Petrol 02Z911023R 0001142003

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GOLF-5K-SCREEN-1

VW Golf Mk5 Mk6 Passat B6 B7 Car Radio Display MMI Multimedia Touch Screen 7"

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9180402

BMW E90 Front Sport Seat Lumbar Wiring Loom Harness Cable 9180402

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9454245

Differential Locking Module BMW F90 M5 G20 Rear Axle Control Unit ECU 9454245

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AB39-14A076-BF

Ford Ranger Mk6 Fuse Box Control Unit Housing Cover Trim Panel AB39-14A076-BF

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7590857-4

Mini Cooper S JCW R56 N14 1.6 211HP Engine ECU Kit DME 7590857 CAS3 Key Manual

€688.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1669061202

Mercedes W221 Fuse Box Control Unit Module Relay A1669061202

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. TSR-152

BMW E88 Cabrio Convertible Battery Control Unit Module ECU 12V TSR-152

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0937085AC

VW Volkswagen Golf GTI Mk7 Body Control Module BCM CHHN Automatic 5Q0937085AC

€113.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9231283-AZB

BMW E70 F10 F11 PDC Parking Sensor Ultrasonic Sensor Azurit Black - S34 9231283

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9497858

Mini Countryman F60 Wiring Cable Loom Adapter Excitement THL 9497858

€33.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A9069006403

Mercedes W906 Electrical Center Fuse Box SAM Body Control ECU Module A9069006403

€465.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9157157

BMW E60 E61 E63 E64 Gateway Module Control Unit ECU 9157157

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2479004111

Mercedes W177 Multimedia Radio Control Module Unit ECU A2479004111

€232.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-14A067-CA

Range Rover Velar L560 Fuse Box Cover Bracket Housing 6G9T-14A067-AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971687S

Audi A4 B8 Door Wiring Harness Loom Rear Left N/S Cabling 8K0971687S

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9153806

BMW F01 F02 Rear Heater Blower Motor Resistor 9153806

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6946108

BMW 7 Series E65 E66 E67 Sensor Rear Seat Airbag 6946108

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. Q0003188V008000000-1

Smart Fortwo C450 Engine Starter Motor Actuator Q0003188V008000000

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 93BB14488AB

Ford Focus Mk2 Starter Motor Engine Actuator Cable Wiring Unit 93BB14488AB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. XS7U-11000-C4A

Ford Focus Mondeo Escort 1.8 Petrol Engine Motor Starter XS7U11000C4A

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2769004901

Mercedes A238 Convertible E450 M276.823 Engine ECU Unit A2769004901 Automatic

€474.95

Free delivery: Aug 10 – 11

If paid before 14:00

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