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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Audi Q5 8R Door Module Control Unit Front Passenger Side 8K0959792R

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8581751

BMW F40 MINI F56 F57 F60 Engine Control Unit ECU Box Top Cover Shield 8581751

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2469005515

Mercedes W176 Rain Light Sensor Control Unit Front Windscreen Camera A2469005515

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. K8D2-19C097-AA

Land Rover Discovery Sport L550 Aerial Antenna Control Module K8D2-19C097-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8H2214N131CA

Land Rover Discovery 4 Driver's Seat Memory Wiring Loom Harness 8H22-14N131-CA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8693213-1

BMW F30 LCI 330e B48X Engine Control Unit ECU Kit DME 8693213 FEM Key Automatic

€740.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. CPLA-17D547-AJ

Land Rover Discovery Sport L550 Windscreen Rain Sensor Module CPLA-17D547-AJ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. LR024071

Range Rover L322 Car Ignition Key Remote Control 433.92MHZ LR024071 AH4215K601BF

€80.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8582803-3

BMW X5 F15 N57N 258HP Engine Control Module Unit ECU DDE Kit 8582803 Automatic

€218.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0971365

Audi A4 B8 Seat Occupancy Belt Alarm Wire Wiring Cable Loom Harness 8T0971365

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. H1BT-15K868-ABD

Ford Fiesta MK7 MK8 Rear Parking Sensor PDC Wiring Loom Harness H1BT-15K868-ABD

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. L0283086

Range Rover L405 Rear Seat Bench Cooler Blower Unit Right O/S L0283087AA

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3428336

Mini Clubman Cooper R55 Antenna Amplifier Diversity Signal Booster 3428336

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6900583-1

BMW 7 Series E65 E66 Cable Wire Power Distribution Box 6900583

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 83F877041A

Audi Q3 F3 Mk2 Panoramic Sunroof Control Unit Module ECU 83F877041A

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9157155

BMW 5 6 Series E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9157155

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2Q0937615A

Volkswagen Polo Mk6 Fuse Relay Box Power Supply Unit 2Q0937615A

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2049012604

Mercedes W204 Parking Control Unit Module ECU A2049012604

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 46355551

Vauxhall Movano C Toyota Proace Max Preheating Box Glow Plug Relay 46355551

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2135409616-1

Mercedes Sprinter W910 Battery Sensor Negative Terminal Cable Wiring A2135409616

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 57A971694A

Skoda Karoq NU7 Rear Door Wiring Loom Harness Cable Right O/S 57A971694A

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0955557A

Audi A6 C6 Door Crash Impact Sensor Front Left Right N/O/S 4F0955557A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7572873

BMW Z4 E85 E86 Battery Holder Hold Down Bracket 7572873

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A6429004201

Mercedes W221 BlueTec Exhaust Gas Aftertreatment Control Unit Module A6429004201

€151.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 09D927750AK

Porsche Cayenne 955 9PA Automatic Gearbox Module Control Unit ECU 09D927750AK

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971104

Audi A5 8T Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0919283E

Parking Distance Audi A3 8V TT Mk3 Seat Leon MK3 Control Module 5Q0919283E

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5CH971120E

Volkswagen Jetta Mk6 Front Door Wiring Harness Cable Passenger Side 5CH971120E

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1775403131

Mercedes w177 Sensor Wiring Harness Cable Front A1775403131

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0941824

Audi A6 C8 Fuse Box Relay Plug Socket Fuse Unit Holder Bracket 4H0941824

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055408987

Mercedes W205 Exhaust Wiring Harness Cable A2055408987

€23.95

Free delivery: Aug 10 – 11

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 10 – 11

If paid before 14:00

Part no. 6902265

BMW E65 E66 E67 Compact Base Support System Rear Black 6902265

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4145401130

Mercedes Vaneo W414 Starter Wiring Harness Battery Ground Cable A4145401130

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6809310

BMW F20 LCI F21 LCI F83 Telematics Communication Module Ecu Control Unit 6809310

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059001611

Mercedes W205 Door Module Front Right O/S Control Unit ECU A2059001611

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9340524

BMW X3 F25 X4 F26 Central Gateway Module Control Unit Lear ZGW-02 4SK 9340524

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0919129A

Audi A5 8T A6 C7 A7 4G A8 4H TV Tuner Digital Video Control Module 4G0919129A

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4L0035225AJ

Audi Q7 4L Radio Aerial Antenna Amplifier AM/FM 4L0035225AJ

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2125404600

Mercedes W212 AMG Front Bumper Parking Sensor PDC Wiring Harness A2125404600

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. NX63-7C078-AA

Range Rover Velar L560 Automatic Transmission Wiring 2.0 D200 NX63-7C078-AA

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8P0907530A

Audi A3 8P Gateway Module Control Unit Gateway Module ECU 8P0907530A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9337881

BMW 1 3 4 F20 F21 F30 F31 F32 Power Distribution Fuse Box Rear 9337881

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0907401H-1

Audi A8 D4 3.0 TDI Quattro CDTA 258HP Engine ECU Kit 4H0907401 BCM + Key + Lock

€332.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1698100212

Mercedes W169 W245 Electrical Wiring Sun Visor Wiring Loom Harness A1698100212

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0959794A

Audi A6 S6 Avant Quattro 4F Door Control Unit ECU Rear Right O/S 4F0959794A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 57C941009-1

Skoda Karoq Front Headlight Headlamp LED Lamp Light Wiring Left N/S 57C941009

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. R60-SCREEN-1

Mini R60 R61 Instrument Cluster Speedometer Display Screen Android 8" Radio

€569.95

Free delivery: Aug 7 – 11

If paid before 14:00

Part no. A2059007339

Mercedes W205 BCM Body Control Module Unit ECU A2059007339

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7640755-8

BMW F20 116i N13 136HP ECU Module Unit Kit DME 7640755 Key + FEM + Lock Manual

€469.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. M8A2-14A390-KA

Range Rover Velar L560 Batter Wiring Loom Connector Plug M8A2-14A390-KA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7796127

BMW X5 X6 Series E70 E71 Diesel Battery Cable Starter-Base B+ 7796127

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7537612-1

BMW X5 E53 E60 E81 E87 E90 Engine Vacuum Control Electric Valve 7537612

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G5971693C

Audi A6 C7 4G Door Card Harness Loom Cable Wiring Rear Left N/S 4G5971693C

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8J0971349S

Audi TT 8J Alternator Main Cable Wiring Harness Loom CBBB Manual 8J0971349S

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-19C299-AE

Land Rover Discovery Sport L550 Dashboard Display Screen 8" FK72-19C299-AE

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-14F681-AH

Land Rover Discovery Sport L550 Gateway Module Control Unit FK72-14F681-AH

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5F0907159E

Seat Leon Mk3 III Cupra 5F Body Impact Sound Control Module Unit 5F0907159E

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2751445

Mini Cooper One R56 R55 R57 R58 LCi Retaining plate fuse box SPEG 2751445

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0937084BS

Audi TTS FV 8S BCM Body Control Module Unit 5Q0937084BS

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8Z0941824C

Audi A4 S4 8H A6 S6 4B Battery Terminal Fuse Box Power Control Unit 8Z0941824C

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0971228AA

Audi A4 A5 S5 8T 8K 3.0 TFSI Alternator Wiring Harness Loom Cable 8K0971228AA

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6840403

BMW F06 F07 LCI F10 LCI Mini F55 F56 F57 Radio Media Player Head Unit 6840403

€104.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9231180

BMW F22 F30 F32 Antenna Amplifier AM FM Booster AMP 9231180

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 83A947356J

Audi Q3 F3 LED Rear Door LED Lighting Module Control Unit Left N/S 83A947356J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8573257-1

BMW F20 F30 F32 120d 320d 420d Diesel N47N 184HP ECU Kit DDE 8573257 Automatic

€142.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2135406631

Mercedes W213 Rear Door Wiring Harness Cable Left N/S A2135406631

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4M0010006J

Audi Q7 4M Fuse Box Battery Terminal Cover Housing 4M0010006J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5QC971566

VW Volkswagen Golf Cd1 Passat 3G AC Control Wiring Loom Harness 5QC971566

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 09D927601

Porsche Cayenne S 92a Automatic Gearbox Oil Pump Control Module ECU 09D927601

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9273597

BMW F01 F10 F11 Audio Player Rear DVD Background ECE US Head Unit 9273597

€151.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7C0937517AL

VW Crafter SY Fuse Box Distribution Relay Module Housing Bracket 7C0937517AL

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6960221

Airbag Module BMW E65 E66 Sensor B-pillar Left N/S Control Unit Air Bag 6960221

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7N0937311

Volkswagen Passat B7 Sharan 7N Electrical Fuse Relay Box 7N0937311

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1K0915418A

Audi A3 S3 8P VW Volkswagen Golf Mk5 HV Battery Jacket Cover Housing 1K0915418A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. J8A2-14D375-AA

Range Rover Velar L560 Centre Console Light Wiring Harness Cable J8A2-14D375-AA

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9265300

BMW 1 2 Series F20 F21 F22 F23 LCi Headlight Switch Control Element Light

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6916565

BMW 5 X5 Series E38 E39 E53 Hands-free Electronics Charging Module MOTOROLA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0971035BA

Audi A5 8T Coupe Front Driver Side Door Wiring Harness Right O/S 8T0971035BA

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5G4971693K

Volkswagen Golf Mk7 5G Rear Door Wiring Harness Cable Loom Left N/S 5G4971693K

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8K0907551-2

Audi S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Unit ECU Kit 8K0907551 Automatic

€303.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8632554

Fuse Box Cover BMW X3 G01 X4 G02 Trim Panel Lid Housing Bracket 8632554

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4G0035502

Audi A7 4G8 Telephone Coupling Reception Antenna Amplifier 4G0035502

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8383551

Mini R50 R53 Headlight Aim Range Control Unit Module ECU Xenon 8383551

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-14C725-CA

Range Rover L405 Front Rear Seat Memory Heating Module DPLA-14C725-CA

€51.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1543906

BMW G30 G31 X3 G01 X4 G02 G11 G32 Control Unit SAS Module ECU 1543906

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9847111

BMW G30 SME BK2 Body Control Module Unit ECU 9847111

€189.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 03L906023KQ

Audi A1 8X 1.6 TDI 105HP CAYC Engine Control ECU Kit BCM Key 03L906023KQ Manual

€132.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3AF945094J-2

VW Passat B7 Estate Rear Boot Lid Wiring Inner Light Lamp Right O/S 3AF945094J

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465400308

Alternator Cable Mercedes W176 W246 OM651 Battery Prefuse Box A2465400308

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06J903023A-1

Audi Volkswagen Seat Skoda Petrol Alternator Generator 14V 140A 06J903023A

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4535402703

Smart ForTwo C453 Battery Negative Minus Wiring Cable A4535402703

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 079911021D

Audi Q7 4L Engine Starter Motor Actuator Starter 079911021D

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 02Z911024

Volkswagen Golf Mk7 Jetta A6 Scirocco Mk3 Starter Motor 02Z911024

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. E83-SCREEN

BMW X3 E83 Head Unit GPS Navigation Display Screen Android Auto CarPlay 9"

€284.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5Q0035842A

Skoda Octavia MK3 5E Radio Player Sat Nav Multimedia Head Unit 5Q0035842A

€203.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6781462

BMW E60 E61 Active Steering Dynamic Drive Control Unit ECU 6781462

€275.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HJ32-14K042-BB

Range Rover Evoque L538 Centre Console Wiring Loom Harness Cable HJ32-14K042-BB

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

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