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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Door Module Mercedes C118 W177 W247 Front Right O/S Control Unit A1779004106

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6975069

Mini Cooper One R50 R52 R53 Cable Door Right Wiring Harness Loom 6975062

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BM5T-14D212-CC

Ford B-Max Bluetooth Electronic Control Module Unit ECU Mk1 BM5T-14D212-CC

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. AH42-15K602-BC

Range Rover L405 Radio Antenna Reciver Module Unit AH42-15K602-BC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2469008510

Body Control Module Mercedes W117 W176 W242 W246 Fuse Box Sam A2469008510

€33.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0035186M

Audi TT 8J Radio CD Player Professional Audio Concern Head Unit 9199439

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139068701-2

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Control Unit A2139068701

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2078202910

Seat Control Module Mercedes A207 W207 Cabrio Rear Control Unit ECU A2078202910

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8X23-17D547-AE

Land Rover Discovery 4 L319 Windscreen Rain Sensor Unit Module 8X23-17D547-AE

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 141951253B-5

Porsche Carrera 996 Relay Number 53 Unit Module 4 Pins Set X3 141951253B-5

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6H22-18C815-AA

Land Rover Discovery 3 L319 Stereo Radio CD Player Head Unit 6H22-18C815-AA

€151.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 83A971104AP

Audi Q3 RSQ3 F3 Rear PDC Parking Sensors Wiring Loom Harness 83A971104AP

€85.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03G906021AB-1

Audi A3 8P 1.9 BLS 105HP Engine Control Unit ECU Kit 03G906021AB Manual

€165.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4N0906093D

Audi Q3 F3 Fuel Pump Control Module ECU 2.5 Petrol DNWA 4N0906093D

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. XQD000230PMA

Land Rover Freelander L314 Sat Nav Head Unit Navigation System XQD000230PMA

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W6945092N-1

Audi A5 F5 Rear Outer Taillight Lamp Wiring Loom Cable Right O/S 8W6945092N

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DG9T-14B533-CF

Ford Mondeo Mk5 Front Door Control Unit Module Passenger Side DG9T-14B533-CF

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8512415-7

Mini Cooper SD R60 ALL4 N47N 143HP Engine ECU Kit DDE 8512415 CAS3 Key Manual

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4M5T-18812-EAC

Ford Focus Mk2 Antenna Aerial Wiring Harness Adapter 4M5T-18812-EAC

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V41-13A603-AD-2

Ford Kuga MK1 Rear Tail Light Inner Left N/S Cable Wire Harness 8V41-13A603-AD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. K8D2-19H440-BB

Land Range Rover Sport L494 Keyless Entry Control Module ECU K8D2-19H440-BB

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6934648

BMW X5 E70 E91 LCI Touring Tailgate Trap Circuit Aerial Amplifier 6934648

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2129063001-1

Radio Head Unit Mercedes W212 Command Navi CD DVD Player Navigation A2129063001m

€161.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7N5837202AC

Seat Alhambra 7n Ibiza 6J Leon 1P 5 Button Car Key Remote 434 MHZ 7N5837202AJINF

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 2K5971557C

Volkswagen Caddy 2K Door Wiring Harness Cable Front Left Right O/S 2K5971557C

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 02Z911024H

Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6933529

BMW 5 Series E60 E61 Centre Console Switch Centre DSC 6933529

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1321501033

Smart Fortwo 451 Starter Alternator Wiring Loom Cable 1.0 M132 A1321501033

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9380334

BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 9380334

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8D0951253-1

Audi A4 B6 B7 B8 Q7 4L A6 C7 A8 D4 Multi Use Relay Unit Module 4 Pins 8D0951253

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9293279

BMW F20 F21 F30 F31 F34 GT Rain Sensor Front Windscreen Light Unit 9293279

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V4971036Q

Audi A3 8V Sportback Front Passenger's Door Loom Wiring Harness 8V4971036H

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0419065D

Audi A4 B9 A5 F5 Power Steering Column Control Unit Module 8W0419065D

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0AD927755AT

VW Volkswagen Touareg 7L Gearbox Transmission Transfer Box Module 0AD927755AT

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6823589

BMW F10 Xenon Footwell Light Module Control Unit ECU FRM III 9126314

€94.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9437208

BMW F45 F48 F49 Mini Countryman F60 Ground Earth Cable Adapter Mass 9437208

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4E0910888E

Audi A4 B8 A5 8T Navigation Sat Stereo Radio Head Unit CD Player 4E0910888E

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2139068701

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Fuse Unit A2139068701

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8515491

BMW X3 F25 Battery Cable 30dX 35dX Wiring Alternator Starter Cable B+ 8515491

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V0907376G

Audi A3 S3 8V Suspension Damping Control Unit Module 8V0907376G

€170.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0009008214

Mercedes W177 W247 W447 W907 Fuel Pump Module Control Unit ECU A0009008214

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 420919275-BLM

Audi A5 8T Rear Bumper PDC Parking Distance Sensor Black Magic Pearl - C9Z

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. DG9T-14B534-BD

Ford Mondeo Mk5 Door Control Module Rear Left Right N/O/S DG9T-14B534-BD

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9365305

BMW F20 F21 F22 F30 Telematics Comunication Control Module Unit ECU 9365305

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 13150706

Opel Corsa D Head Air Module Roof Side Curtain 13150706

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9204526

BMW E92 Xenon Footwell Light Module Control Unit ECU PL2 FRM II 9204526

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9231321-1

BMW X3 F25 X4 F26 Dashboard Monitor Onboard Central Display Screen 6,5" 9231321

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. N9D3-14E159-AF

Land Range Rover Velar L560 Evoque L551 Air ECU Control Module N9D3-14E159-AF

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1665401913

Mercedes W166 GLE Heater Booster PTC Wiring Harness Loom Cable A1665401913

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9380947

BMW X1 F48 Mini Cooper F55 F56 F60 Connecting Line CID/HU-H 9380947

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 03G906021PD-1

Volkswagen Caddy 1.9 TDI BLS 105HP Engine ECU Kit 03G906021PD BCM + Key Manual

€237.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 83A945091B-1

Audi Q3 RSQ3 F3 Rear Tail Light Wiring Cable Plug Outer Left N/S 83A945091B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8J0971615B

Audi TT TTRS 8J Front Gearbox Wiring Harness Cable Guide Left N/S 8J0971615B

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9116978

BMW X5 Series E70 Cable Loom Door Rear Left Right N/O/S Wiring Harness 9116978

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8S0971104

Audi TT FY Rear Bumper PDC Cables Set Wiring Loom Harness 8S0971104

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A4519060480

Smart ForTwo C451 Radio Stereo Audio Head Unit CD Bluetooth Bosch A4519060480

€227.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7PP907279CF

Porsche 718 Boxster 982 Body Control Module BCM ECU 7PP907279CF

€332.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6C4971693E

VW Volkswagen Polo 6R Rear Door Harness Wiring Loom Cable Left N/S 6C4971693E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8707676

BMW F22 F32 F36 Body Control Comfort Module Unit 8707676

€123.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7P5971114B

Porsche Cayenne 92A Crash Impact Sensor Fanfare Wiring Harness Cable 7P5971114B

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5Q0959592E

Audi A3 8V Front Door Module Control Unit Module Right O/S ECU 5Q0959592E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. JK2T-18D815-CL

Ford TRANSIT 12 Radio Stereo Head Unit JK2T-18D815-CL

€104.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8651049

Mini Countryman F60 Battery Ground Earth Mass Cable 8651049

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. BJ32-14632-BC

Range Rover L538 Door Wiring Loom Harness Cable Rear Left N/S BJ32-14632-BC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6866990

Airbag Module BMW F01 F02 LCI F10 F11 F13 Air Bag ECU ICM Control Unit 6866990

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8631656

BMW F20 F21 F30 LCI M140i 340i Wiring Harness Motor Sensor System Module 8631656

€156.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2135452840

Mercedes W213 ECU Bracket Control Unit Module Holder Mount A2135452840

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0025450801

Fuse Holder Mercedes W169 W245 W906 Electrical Fuse Box Bracket A0025450801

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. H1BT-14B321-AH

Ford Fiesta Mk8 Air Control Unit Module ECU H1BT-14B321-AH

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9187625

Bluetooth Module BMW E87 LCI E90 Hands Free High MULF2 9187625

€37.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8642658

BMW G11 LCI G12 LCI G30 Earth Ground Line Cable Transmission Gearbox 8642658

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. KPLA-14D550-AA

Land Rover Range Rover Sport L494 Hybrid Battery Cooling Fan KPLA-14D550-AA

€51.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A6421508900-6

Mercedes W207 E350 OM642.838 Engine Control Unit ECU Kit A6421508900 Automatic

€408.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6970701-1

BMW 3 Series E93 E93N LCI 1 Rear Bumper Antenna Aerial Telephone 6970701

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6932644-1

BMW 3 5 Series E60 E71 E90 E92 Suppression Filter Aerial Module Antenna 6932644

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 7G9T-14B534-BC

Land Rover Freelander 2 L359 Rear Door Module Left Right N/O/S 7G9T-14B534-BC

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A2059004321

Mercedes W205 X253 Front Right O/S Door Control Unit Module A2059004321

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 95861200811

Porsche Cayenne S 92a Power Electronics Cable Wire Harness Loom 95861200811

€759.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4F0959792E

Audi A6 C6 Front Passenger Side Door Left N/S Module Unit Control ECU 4F0959792E

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A61AA3

BMW X1 U11 Radio Remote Control Car Key Wireless BDC ECE ROW 5A61AA3

€7,599.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6933162

BMW E65 E66 On-board Navigation Display Monitor Screen 8,8" 6933162

€47.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 90589541

Vauxhall Opel Astra G Fuse Box Covering Trim Panel Lid Housing 90589541

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 1K0937503A

Audi TT 8J A3 8P Volkswagen Golf Mk6 Octavia Relay Fuse Box Panel 1K0937503A

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5H0971104P

Volkswagen Golf Mk8 CD1 Parking Sensor Wiring Rear Bumper Loom Cable 5H0971104P

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8V51-14B144-BA

Ford Fiesta Mk7 Fuse Relay Box Module Control Unit 8V51-14B144-BA

€42.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 3C0035195C

Volkswagen Golf Mk5 Jetta Passat B6 Radio CD Player MP3 Unit 3C0035195C

€70.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9380933

BMW F45 Front Door Wiring Driver's Door Cable Wiring Loom Harness 9380933

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1639800164

Mercedes W163 Rear Bench Backrest Gas Strut Right O/S Side A1639800164

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8741637

BMW X1 F40 F48 Mini F55 F56 F57 F60 Earth Cable Battery Cable 8741637

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 6801454

BMW X5 F15 Wiring Harness Loom Cable 6801327

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 4G5971035AH

Audi A6 C7 Front Door Wiring Harness Loom Cable Driver Side O/S 4G5971035AH

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1669006105

Door Module Mercedes W176 W246 Front Right O/S Control Unit A1669006105

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A1779006715

Mercedes W177 Wireless Charger Centre Console Phone Charging Module A1779006715

€99.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. A0038202926

Mercedes W164 X164 W221 SRS Airbag Impact Crash Sensor A0038202926

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 0AM911023R

Audi A3 8V 1.4 TSI Petrol Starter Motor Engine Actuator Unit 0AM911023R

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. CK52-14B079-FE

Range Rover L405 Centre Console Wiring Loom Harness Cables CK52-14B079-FE

€56.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 8W0959595M

Audi A4 B9 A5 F5 Door Module Rear Right Left N/O/S Control Unit 8W0959595M

€32.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 5A0B302

BMW F20 F30 Mini F60 KAFAS 2 Camera Speed Control ECU Module Unit 5A0B302

€28.95

Free delivery: Aug 5 – 10

If paid before 14:00

Part no. 9285504

Distributor BMW X5 F15 X6 F16 B + Battery Power Distributor 9285504

€23.95

Free delivery: Aug 5 – 10

If paid before 14:00

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