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 X1 F48 Rear Door Wiring Loom Harness Cable Left N/S 6840096

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2125458040

Bracket Holder Mercedes W204 W212 W222 Auxiliary Generator Battery A2125458040

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR097687

Land Rover DISCOVERY SPORT L550 Front Bumper Wiring Loom Harness JK7214369GA

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6421505526-1

Mercedes C219 CLS 320 CDI 224HP OM642.920 Engine ECU Kit A6421505526 Automatic

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9389286

Door Wiring Mini Clubman F54 Front Passanger Side N/S Door Harness 9389286

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. GOLF-1K-SCREEN

Volkswagen VW Golf Mk5 Mk6 Passat B6 B7 Android Car Radio System Touchscreen 7"

€189.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6549003200-2

Mercedes W213 E220d OM654 194HP Engine Control ECU Kit A6549003200 Automatic

€208.95

Free delivery: Aug 5 – 10

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 5 – 10

If paid before 14:00

Part no. 8T0035223AP

Audi A4 S4 B8 Audio Amplifier Sound Booster Control Unit Module 8T0035223AP

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2475457300

Mercedes W177 Fuse Box Relay Cover Lid Control Unit Bracket Trim A2475457300

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0971693E

Audi Q7 4L Rear Door Wiring Harness Cable Loom Left Right N/O/S 4L0971693E

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2201L720P

Audi A4 B8 A5 8T Android Auto Carplay Display Screen 4+64 2201L720P

€165.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. YWC500312

Land Rover Discovery 3 L319 Parking Aid Module ECU Control Unit YWC500312

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8K0959792J

Audi A4 B8 Door Module Front Left N/S Control Unit Module ECU 8K0959792J

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6927786

BMW X5 Series E53 Amplifier Compensator Holder Catch Bracket 6927786

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. HPLA-14D617-BD

Range Rover L405 Front Door Control Module Unit Left N/S HPLA-14D617-BD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. MK83-19J270-AC

Land Range Rover Velar L560 Noise ECU Module Pedestrian Protect MK83-19J270-AC

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. L9W3-14D550-AA

Land Rover Range Rover Velar L560 EV Battery Cooling Cooler Fan L9W3-14D550-AA

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5971693D

Porsche Cayenne 92A Rear Door Wiring Harness Cable Left Right N/O/S 7P5971693D

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3S7T-17D547-AA

Ford Focus C-Max Mondeo Mk3 Windscreen Rain Light Sensor 3S7T-17D547-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0907503-5

Audi RSQ3 F3 Headlights Leveling Lamp Height Sensor Headlamp Unit 5Q0907503

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9364401

BMW G20 G21 G30 G31 Positive Battery Cable Lead Cover Cap 9364401

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 283930431R

Roof Microphone Mercedes Citan W415 Interior Mic Unit Wiring Cable 283930431R

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4L0971225E

Audi Q7 4L Positive Battery Terminal Cable Lead 4L0971225E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 07K903143F

Audi RS3 8V A3 8P Alternator Mounting Bracket Carrier 07K903143F

€113.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9657384680

Citroen C4 Peugeot 407 3008 Alarm Anti-Theft Siren Module Unit 9657384680

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4M1959593K

Audi A6 C8 Q8 4M Touareg MK3 Door Control Unit Module Driver's Side 4M1959593K

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0945094H-2

Audi A8 D4 Rear Inner Boot Lid Tail Light Right O/S Harness Loom Wire 4H0945094H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BK2T-18C394-BBE

Ford Transit Custom Tailgate Rear Door Wiring Loom Left N/S BK2T-18C394-BBE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1729006609-2

Mercedes SLK R172 Radio CD Player Sat Nav Comand Head Unit A1729006609

€151.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KK2T-19L540-AD

Ford Transit Custom Mk8 Sliding Side Door Wiring Loom Left N/S KK2T-19L540-AD

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AV1T-14026-AAB

Ford B-MAX Door Wiring Frame Assy Jumper Rear Left N/S AV1T-14026-AAB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9371789

BMW F20 F21 F30 F31 Bluetooth Teleservices GPS Telematics Module 9371789

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3R0971073

Seat Exeo 3R Front Frame Panel Wiring Harness Cable 3R0971073

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0907217C

Audi A4 S4 B9 Front Windscreen Windshield Lane Assist Camera 8W0907217C

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9874189

BMW 1 3 Series F20 F30 MINI F56 Control Unit Air Conditioning Module 9284440

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7426094

BMW F83 M4 S55 Petrol Engine Fuel Pump Control Module Unit ECU 7426094

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR028237

Range Rover Evoque L538 Occupancy Sensor Mat Front Pasenger Seat 8X23-14C288-AB

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129002813

Mercedes W212 PDC Parking Distance Control Unit Module Sensor A2129002813

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7856819

Battery Cable BMW F90 M5 F91 M8 Wire Lead Positive Alternator Starter B+ 7856819

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P6035552A

VW Touareg 7P Antenna Amplifier Signal Booster Module Rear Right O/S 7P6035552A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8U0971036

Audi Q3 8U Door Loom Wiring Harness Cable Front Passenger Side N/S 8U0971036

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1729007313

Mercedes SLC R172 PDC Parking Sensor Module Unit ECU A1729007313

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8634167

Alternator BMW G11 G12 LCI G20 G21 G30 G31 Alternator 250A Denso 8634167

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2198200726

Door Module Mercedes C219 Front Right Door O/S Control Unit Module A2198200726

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5E3907159F

Skoda Octavia IV Impact Sound Control Module Unit ECU 5E3907159F

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2048708626

Mercedes W212 Media Interface Control Module Unit ECU A2048708626

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1J0971120AP

Volkswagen Golf Mk4 Door Wiring Harness Loom Front Driver's Side 1J0971120AP

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9078280000

Mercedes W906 W907 Radio Antenna Rod Roof Antenna A9078280000

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9199305

KaFAS Camera BMW F10 F11 Rear View Control Unit Module 9199305

€89.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03L906023PP-2

Audi A3 8P 1.6 TDI 105HP CAYC Engine Control ECU Kit BCM Key 03L906023PP Manual

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7PP905852C

Porsche Cayenne 92A Steering Column Locking Control Unit Module 7PP905852C

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6R0971537H

Audi A1 8X Negative Battery Terminal Cable Wiring 6R0971537H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9154349

BMW MINI Clubman R55 Cable Wiring Loom Splitdoor Split Door Rear Left N/S

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DPLA-14D620-AB

Range Rover Sport L405 Rear Door Control Module Unit Right O/S DPLA-14D620-AB

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1768200704

Sunroof Wiring Mercedes C117 W176 Panoramic Motor Cable Harness A1768200704

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7288993-2

BMW X5 E70 Headlight Headlamp Wiring Harness Cable Plug Left N/S 7288993

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9303637

BMW Z4 E89 AUX USB Smartphone Connection Lead Cable Wiring 9303637

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0971085A

Audi TT TTS 8J Rear Bumper PDC Parking Sensor Wiring Loom Harness 8J0971085A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6F0971161J

Seat Ibiza Mk5 Fr Rear Door Wiring Loom Harness Cable Wire Left N/S 6F0971161J

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-19H440-AB

Land Rover Evoque L551 Discovery L550 Keyless Control Module K8D2-19H440-AB

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9367693

BMW M5 F90 G11 G12 Power Distribution Relay Fuse Box Make Contact 9367693

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8506199-3

BMW E60 E61 LCI 520d Diesel N47 Engine ECU Kit DDE 8506199 CAS 3 + Key

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G0971845A

Audi A6 C7 Fuse Relay Box Sam Control Module 4G0971845A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0035507L

VW Volkswagen Scirocco Mk3 Roof Top Antenne Control Unit Module 1K0035507L

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9217234

Module Bracket BMW X3 F25 X4 F26 Control Unit Holder Carrier 9217234

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3456421

Mini Roadster R59 Aerial Roof Antenna Base Module 3456421

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H22-14A614-EA

Land Rover Discovery 4 Driver's Seat Memory Wiring Loom Harness 4H22-14A614-EA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3457441

Mini Cooper One R55 R56 R57 LCI R60 R61 CHAMP 2 Navigation DAB 3457441

€284.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8369504

BMW 5 E39 Saloon Radio Signal Antenna Amplifier Coaxial Cable 8369504

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2128702751

Control Panel Mercedes W212 Comand Navi CD Switch Push-Button A2128702751

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. FK72-14632-BCD

Land Rover Discovery Sport L550 Door Wiring Rear Right O/S FK72-14632-BCD

€75.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. LR072286

Land Rover Discovery Sport L550 Tailgate Opening Sensor Upper FK72-14E108-AA

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907182H

Audi A8 D4 4H Front Seat Backrest Control Module Unit ECU 4H0907182H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A82A01

BMW G20 G21 G28 Side Indicator Control Module Unit Left N/S 5A82A01

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8377601

BMW E38 Door Windows Control Unit Module ECU ZB PMBT LOW 8377601

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7640132-2

Alternator BMW F20 LCI F30 Mini F56 F60 Alternator Generator DENSO 180A 7640132

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5QA919294E

Volkswagen Golf Mk7 5G PDC Parking Sensor Control Module ECU 5QA919294E

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669063301-2

Mercedes ML W166 Rear Tail Light Lamp Wiring Harness Cable Left N/S A1669063301

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A9079008805

Mercedes Sprinter W907 W910 Head Unit Multimedia Controller Module A9079008805

€80.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9253637

BMW 3 5 Series F10 F11 F30 F31 Airbag Control Unit Module 9253637 65779253637

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907705J

Porsche Cayenne 92A Steering Column Control Module Unit 4H0907705J

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7573029

Mini Cooper R55 R56 IBS Negative Battery Lead Cable

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6992415

BMW 7 F02 ECU Body Control Module Junction Box JBBFEIIIR LP 6992415

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9222855

BMW X5 X6 Series E70 E71 Navigation System Car Computer CIC 9222855

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. L8A2-14D374-CE

Range Rover L560 AirBag Control Air Module Unit SRS ECU L8A2-14D374-CE

€132.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3450343

Ultra-sonic Alarm Mini Cooper R55 R56 System Module 3450343

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469007314-1

Mercedes CLA C117 Central Display Screen Multimedia Sat Nav Unit A2469007314

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7835892

BMW 5 6 Series E60 E61N M5 E63 M6 Cable Starter Base B+ Engine Battery 7835892

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3B0K-40104

Ford Ranger Mk6 Additional Fuse Box Relay Box Module Unit TKE4180109A

€66.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4H0907355C

Audi A7 4G A8 D4 Ad Blue Control Unit Module ECU 3.0 TDI Diesel 4H0907355C

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8595355

BMW G11 G12 G30 G32 G14 Starter Cable Alternator Cable Starter-Base B+ 8595355

€29.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6751504

Module Holder BMW X5 E53 Rear Tyre Pressure Control Module Mount Bracket 6751504

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8R0867749A

Porsche Macan 95B Battery Holder Strap Mounting Bracket Clamp 8R0867749A

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7L0971537

Porsche Cayenne 9PA Negative Battery Terminal Cable Wiring Loom 7L0971537

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BV21-12A650-ACD-1

Ford Fiesta Mk7 1.4 TDCI 70HP KVJA Engine Control ECU BV21-12A650-ACD Manual

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4N0955557A

Audi A6 C8 A7 C8 Door Crash Impact Sensor Front Left N/S Side 4N0955557A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0065424218

Mercedes Sprinter W906 Turn Rate Sensor Module Control Unit A0065424218

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9247024

BMW F01 LCI F07 GT F10 F11 X3 F25 Air Module Control Unit ECU 9247024

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

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