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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Land Rover Range Rover Velar L560 Comfort Control ECU Transceiver MK83-15K622-CA

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2059000524

Mercedes W207 W212 Telematics Services Communication Module A2059000524

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. K8D2-14N172-AD

Range Rover Evoque L551 Battery Box Wiring Cable Hybrid K8D2-14N172-AD

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9297282-1

BMW E63 E64 Battery Power Cable Lead Positive Underfloor Red 9297282

€37.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0971765

Audi A6 C6 Wing Mirror Adjustment Switch Wiring Loom Cable 4F0971765

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0959793G

Audi A4 B8 Door Module Front Left N/S Control Unit ECU 8T0959793G

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6944499

BMW 5 6 Series E60 E61 E63 Passenger Side Door Airbag Control Module 6944499

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6G91-10663-AD

Ford Mondeo Mk4 Battery Tray Holder Bracket Support 2.0 Petrol 6G91-10663-AD

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8572439-4

BMW F30 F31 N57N 330d 258HP Diesel Engine ECU Kit DDE 8572439 FEM Key Automatic

€213.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9134280

BMW E81 E82 E87 E90 E91 Air Module Control Unit No Crash Data 9134280

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6907313

BMW E65 E66 Wiring Loom Cables Rear Bumper PDC 6907313

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 2T1T-14A584-BG

Ford Transit Connect Door Wire Harness Loom Front Driver's Side 2T1T-14A584-BG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 46868567

Vauxhall Movano C Electric Power Steering Wiring Harness 2.2 Diesel 46868567

€56.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8578945-4

BMW F20 F21 F30 116d 316d N47N 116HP ECU Engine Contol Unit DDE 8578945 Manual

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7522284

Mini Cooper One R50 R52 W10 Battery Cable Plus Pole 7522284

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0115453826

Mercedes W163 Data Connector Link Plug Wire Harness Pigtail A0115453826

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4G8971365

Audi A7 4G Seat Cable Front Left Right N/O/S Wiring Loom Harness 4G8971365

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5WA937132A

VW Volkswagen Caddy SB Golf GTI CD1 Fuse Box Cover Top Lid Housing 5WA937132A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6913896

BMW Z4 E85 E86 Aerial Antenna Amplifier Module Rod 6913896

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 896500D040

Toyota Yaris MK1 Power Steering Column Control Unit Module 896500D040

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6950093

BMW X5 Series E70 Flat Cable Wiring Wire CAS Start Stop 6950093

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906018KR-1

Seat Ibiza 6J IV 2.0 TDI CFHD 143HP Engine Control ECU 03L906018KR Manual

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F1971845A

Audi R8 42 Fuse Box Electrical Connector Relay Control Unit Module 4F1971845A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. GB3T-14D068-KC

Ford Ranger Mk3 Fuse Box Relay Panel 2.2 TDCI 4x4 GB3T-14D068-KC

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0018204535

Microphone Mercedes W639 W906 Hands-Free Interior Mic Unit A0018204535

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7L5971104

Porsche Cayenne 955 9PA Rear Bumper PDC Sensor Wiring Loom Cable 7L5971104

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9259468

BMW X3 F25 Fuse Box Power Distribution Control Unit Box Rear 9259468

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8044503

BMW F06 F10 F12 F13 Fuel Injectors Wiring Loom Harness Cable 8044503

€66.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K5971030D

Audi A6 C8 Door Card Wiring Loom Harness Cable Front Passenger Side 4K5971030D

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 83A945092-2

Audi Q3 F3 LED Tail Light Rear Right O/S Plug Wire Cable Connector 83A945092

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5B824D2

BMW F74 Gran Coupé Emergency Module Telematics Control Unit 5B824D2

€303.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8J0907376A

Audi TT 8j TTS Magnetic Suspension Damper Control Unit 8J0907376A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5Q0907530AG

Skoda Octavia 5E Mk3 Superb Mk3 Gateway Control Unit Module 5Q0907530AG

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LR037711-2

Range Rover Evoque L538 Rear Tail Light Lamp Connector Wire Left N/S LR037711

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906022RC-1

Audi TT 8J 2.0TDI 170HP CBBB Quattro Engine ECU Kit BCM Key 03L906022RC Manual

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3T9035577A

Skoda Superb Mk2 B6 Aerial Antenna Amplifier Module Control Unit 3T9035577A

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9247481

BMW X3 F25 Control Module CAS Unit ECU 20dX Diesel N47N 9247481

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9134661

BMW E87 E90 E91 E92 Seat Control Unit Module ECU 9134661

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6992830

BMW F10 F20 F30 Mini F55 F56 KaFAS Camera Front Control Unit Module ECU 6992830

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. YMD001991

Range Rover L322 Parking Sensor PDC Wiring Harness Cable YMD001991

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. KK62-14N244-AE

Range Rover Sport L494 Alternator Wire Harness Cable Hybrid KK62-14N244-AE

€61.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1K0907530F

Volkswagen Touran 1T Central Gateway Module Control Unit Lear 1K0907530F

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9329345

BMW F20 F21 F30 F31 Bluetooth Telephone Control Module Unit 9329345

€113.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7589971-3

Mini One R56 N12 1.4 N12B14A 95HP Petrol ECU Kit DME 7589971 + CAS3 + Key

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4L0971036K

Audi Q7 4L Door Wiring Loom Harness Wire Cable Front Right O/S 4L0971036K

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8J0915459

Audi A4 B8 A5 8T TT MK2 Positive Battery Terminal Cable Overload Fuse 8J0915459

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6929726

BMW E65 E66 Front Seat Wiring Harness Loom Cable Left N/S 6929726

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. D1BT-14D212-EB

Ford Transit Connect Bluetooth Interface Control Module ECU D1BT-14D212-EB

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8S0972752

VW Volkswagen Tiguan 5n Passat B8 Wiring Loom Harness Plug Conctact 8S0972752

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0945096H-2

Audi A8 D4 Rear LED Light Lamp Taillight Right O/S Harness Loom Wire 4H0945096H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2074401208

Mercedes W207 Parking Sensor Wiring Loom Cable Harness Rear PDC

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2185403005-1

Mercedes CLS C218 Front Door Wiring Harness Loom Passenger Side A2185403005

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0035420219-1

Relay Mercedes W639 W906 5-Pin Black 12V 20A A0035420219 Set X2

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A0009063000

Alternator Generator Mercedes W204 W212 M271 Engine Valeo 150A 14V A0009063000

€94.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2118704926

Seat Module Mercedes W164 W203 W211 C219 Front Memory Control Unit A2118704926

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6995617

BMW F40 F44 G20 G21X5 G05 X6 G06 Immobilizer Emergency Start Coil 6995617

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 859800D060

Toyota Yaris XP10 Door Control Module Unit ECU 859800D060

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 059911022

AUDI Q5 8R Quattro 3.0 TDI Diesel CCWA CCWB Starter Motor 059911022

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 1812480

Ford Focus Mk3 Seat Air Module Sensor Front Passenger Side BM51-A625B02-AC

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9119578

Antenna Amplifier BMW Z4 E85 E86 Rod Antenna Unit Module 9119578

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CV1T-14B533-AG

Ford Fiesta Mk7 Front Door Module Control Unit ECU Passegner Side CV1T-14B533-AG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2135401217

Mercedes W213 OM642 Diesel Engine Alternator Wiring Loom Harness A2135401217

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. CK52-14301-BC

Range Rover L405 Negative Battery Terminal Cable Lead Wiring CK52-14301-BC

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9270050

PDC Parking Sensor BMW F01 F10 F11 Front Rear Bumper Sophisto Grey 9270050

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0907801H

Parking Brake Module Audi A6 C7 A7 4G A8 4H Handbrake Control Unit 4H0907801H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A9065400341

Battery Cable Mercedes Sprinter W906 Negative Lead Wiring Harness A9065400341

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T0035570

Audi A6 C6 Interference Disturbance Suppressor Filter Module 8T0035570

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4K8971036F

Audi A6 C8 Door Card Wiring Loom Harness Cable Front Passenger Side 4K8971036F

€47.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2129006012

Fuse Box Mercedes W204 W212 SAM Relay Control Unit Module A2129006012

€89.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9381305

Radio Professional BMW F20 F21 F30 F31 CD Player DAB Bluetooth 9381305

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6429060900

Mercedes W204 W207 W212 W221 Starter Motor A6429060900

€37.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9312764-1

BMW F10 LCI Body Control Module ECU Junction Box PL6 JBBFE III V2 9312764

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906022FL-1

Audi A6 C6 2.0 TDI 233HP CAGB Engine Control ECU Kit 03L906022FL Key + Lock

€180.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045458601-1

Mercedes W204 Fuse Box Rear Relay Control Unit Module SAM A2045458601

€132.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2045451040

Mercedes W204 W212 Multimedia Interface Unit Module Bracket Mount A22045451040

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6549001300-1

Mercedes W213 C238 Glow Plug Relay Diesel OM654 Preglow Module A6549001300

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A2711504979-1

Mercedes W204 156HP Engine Control Unit ECU KIT SET Petrol Automatic A2711504979

€560.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6549003300

Mercedes W177 Glow Plug Relay Preglow Module Diesel OM654 A6549009900

€42.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. DG9T-14633-GCG

Ford Mondeo Mk5 Door Wiring Harness Loom Cable Rear Left N/S DG9T-14633-GCG

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A6398201689

Mercedes Vito W639 Sound Audio Amplifier Control Unit Module A6398201689

€284.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 3417160

BMW X3 E83 LCI Cable Alternator Starter Base B 3417160

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 6S6Y-14401-NDF

Ford Fiesta St Mk5 Fuse Box Relay Box Module 2.0 DURATEC ST150 6S6Y-14401-NDF

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. HPLA-9137-BD

Land Rover Range Rover Sport L494 Steering Wheel Airbag Wiring Loom HPLA-9137-BD

€28.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. LPLA-10C307-AD

Range Rover Sport L494 Starter Motor Cable Wire Loom 3.0 Diesel LPLA-10C307-AD

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A1648205585

Mercedes W164 Air Module Control Unit SRS Sensor ECU Bosch A1648205585

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 8T2035110A

Audi A5 8T Radio Head Unit Navi CD DVD Player Changer 8T2035110A

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 9362396

BMW F20 REM Rear Electronic Module Fuse Box Control Unit V3 9362396

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4F0910177

Audi A6 C6 Safety Ultra Sonic Alarm Movement Detector Module Unit 4F0910177

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 4H0971365H

Audi A8 D4 Seat Wiring Harness Cable Seat Belt Warning System 4H0971365H

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7811163

BMW 1 3 5 Series F10 F20 E90 LCI Wiring Harness Engine Glow Plug Module 7811163

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7P6035730B

VW Volkswagen Passat B7 Caddy 2C Bluetooth Control Module Unit ECU 7P6035730B

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 7G9T-14B533-KE

Ford Mondeo MK4 Jaguar XF Front Door Control Unit Passenger Side 7G9T-14B533-KE

€23.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 5K0937086AA-1

VW Volkswagen Caddy 2k Body Control Module BCM 2.0 TDi Automatic 5K0937086AA

€170.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. BM2T-14B321-AC

Ford S-Max Mk1 Air Module Control Module Unit ECU BM2T-14B321-AC

€51.95

Free delivery: Jul 29 – Aug 3

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: Jul 29 – Aug 3

If paid before 14:00

Part no. 9262215

BMW F01 Front Bumper Parking Sensor PDC Wiring Loom Harness Cable 9262215

€80.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. A4535406211

Smart A453 Wiring Loom Harnes Cable A4535406211

€32.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

Part no. 03L906018JG-2

Audi A5 8F Engine Control Unit ECU 2.0 TDI CGLC 177HP Manual 03L906018JG

€127.95

Free delivery: Jul 29 – Aug 3

If paid before 14:00

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