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 Evoque L551 Front Seat Wiring Loom Harness Left N/S M8D2-14E719-AVC

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Telematics Module BMW F21 Bluetooth Control Unit ECU 2447525

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7583526-1

BMW X3 Series E83 2.5si N52N 218HP Engine ECU Kit DME + Key 7583526 Manual

€332.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6812248

BMW X1 F48 Front Door Wiring Loom Harness Cable Driver Side 6812248

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7605061-2

BMW F10 F30 N20 Alternator Generator 14V 170A Diesel Denso DAN1126

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. L8A2-14D374-CD

Land Rover Range Rover Velar L560 Air Module Control Unit L8A2-14D374-CD

€199.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. UM466696Y

Ford Ranger Mk4 Door Loud Speaker Loudspeaker Front Left N/S UM466696Y

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1729008206

Interface Module Mercedes W176 W204 W212 Multimedia Control Unit A1729008206

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0971478C

Volkswagen Transporter T5 Additional Heater Wiring Harness Loom Cable 7E0971478C

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907383N

Porsche Macan 95B Trailer Detection Control Module Unit ECU 4H0907383N

€213.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8704694

BMW G20 G21 Negative Battery Cable Wiring Hybrid 8704694

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971224BA

Audi A8 D4 Alternator Starter Motor Wiring Harness Cable Loom 4H0971224BA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14632-BDD

Land Rover Discovery Sport L550 Rear Wiring Loom Harness Right O/S FK7214632BDD

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2213201058

Mercedes R231 Valve Block Air Suspension Control Unit A2123200358

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N1XT-14630-TFE

VW Volkswagen Amarok NF Front Door Harness Wiring Passenger Side N1XT14630TFE

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118703485

Mercedes W211 Door Module Rear Right O/S Control Unit ECU A2118703485

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. R8E2-14D618-CA

Land Rover Discovery L550 Front Door Control Module Driver Side R8E2-14D618-CA

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6838608

BMW 1 2 Series F40 F44 Radio Antenna Amplifier FM1 / AM / DAB 6838608

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06L903018G

Audi A4 B9 Alternator Generator 14V 230A Valeo 2.0 Petrol DMSB 06L903018G

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6929347-1

BMW 1 3 SERIES E82 E90 E92 Roof Antenna Aerial Shark Fin GPS Radio TeL 1682646

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7118854

BMW Z4 Series E85 Cable Loom Wiring Harness Rear Window Heating 7043906

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0131547002-1

Alternator Generator Mercedes W211 CLS C219 OM642 Diesel 14V 180A A0131547002

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G4971694B

Volkswagen Golf Mk7 Rear Door Wiring Harness Cable Right O/S 5G4971694B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Z0161C

Skoda Octavia 1Z Mk2 Interior Door Wiring Loom Harness Cable 1Z0161C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EX23-14301-AA

Jaguar XF X250 Negative Earth Minus Battery Wiring Cable EX23-14301-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV1T-14B520-AB

Ford Transit Connect Voltage Converter Electronic Module Unit AV1T-14B520-AB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DN1T-15K600-EE

Ford Fiesta Mk7 BCM Body Control Module Unit ECU DN1T-15K600-EE

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1778152

Ford Transit Mk7 Door Wiring Harness Cable Front Driver's Side 9C1T-14A631-AB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 81980-0D040

Toyota Yaris Mk2 P9 Flasher Relay Unit Module 12.8V 81980-0D040

€23.95

Free delivery: Nov 12 – 13

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Part no. 5M5T-14B192-DA

Land Rover Freelander L359 Relay 4-Pin Black 12V 40A FOMOCO 5M5T-14B192-DA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959793M

Audi A8 D4 Front Door Control Unit Module Driver Side ECU 4H0959793M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AX23-10F845-AA

Jaguar XF X250 Bluetooth Phone Control Module Unit ECU AX23-10F845-AA

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8A61-13405-AE-1

Ford Fiesta Mk7 Taillight Lamp Light Harness Loom Wire Left N/S 8A61-13405-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009006302

Mercedes W176 Automatic Gearbox Transmission Module Control Unit ECU A0009006302

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0959793S

Audi A4 B8 Front Door Control Module Unit ECU 8K0959793S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229006916

Mercedes W213 Satelite Navigation Stereo Radio Head Unit Module A2229006916

€607.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-19C164-ZF

Land Rover Discovery Sport L550 Radio Audio Sound Amplifier FK72-19C164-ZF

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959655H

Audi A7 4G8 Air Module Control Unit ECU SRS Module Unit 4H0959655H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9321022

BMW Mini Cooper F55 F56 F57 B Junction Terminal Box 300-400 W 9321022

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907182H

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

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6812240

BMW F45 F46 Door Card Wiring Harness Adapter Cable Front Right O/S 6812240

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A34C94

BMW X1 F48 Catalytic Reduction System Module Unit 13264014

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR143644

Range Rover Evoque L551 Transmission Harness 2.0 Diesel M8D2-7C078-BB

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LT1T15604CCB

Ford Transit Connect Mk2 Body Control Module BSI Unit P004T LT1T-15604-CCB

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5J6945112A-2

Skoda Fabia Mk3 Rear Tail Light Wiring Harness Cable Plug Right O/S 5J6945112A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14A614-ADC

Land Rover Discovery Sport L550 Steering Gear Wire Loom Harness FK72-14A614-ADC

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4F0971981A

Audi A6 C6 Fuse Box Holder Cover Cap Lid 2.0 TFSI 4F0971981A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715400107

Mercedes SLK R171 Window Lifter Lift Switch Cable Wiring Harness A1715400107

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8617320

BMW G11 G12 G30 G31 Inverter Converter Bracket Mount B48X 8617320

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9T14A631AF

Ford Mondeo Mk4 Front Door Jumper Wire Assembly Vents Loom Left N/S 6G9T14A631AF

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035AR-1

Audi A5 S5 RS5 8T Door Card Wiring Loom Harness Wire Driver's Side 8T0971035AR

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6844137

BMW G20 G21 G23 G26 G29 Battery Positive Terminal Cover Lid Bracket 6844137

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018DR

Volkswagen Touran 1T 2.0 TDI CFHC 140HP Engine ECU 03L906018DR Automatic

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L903018A

Audi A4 B9 A5 F5 Q5 FY A6 C8 A7 C8 Alternator Generator Valeo 04L903018A

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DV6T-14297-AE

Ford Transit Connect Front Wiper Motor Wiring Loom Harness Cable DV6T-14297-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469055003-1

Ignition Switch Mercedes W167 W177 W247 Lock Control Unit Module A2469055003

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2GA035284A

Seat Ibiza KJ1 VW Polo MK6 Online Services Control Module ECU Unit 2GA035284A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B907553T

Porsche Macan 95B Air Suspension Control Module Unit ECU 95B907553T

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. ML3H-19E907-AB

Volkswagen Amarok Mk2 Rain Temperature Humidity Sensor ML3H-19E907-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR062008

Range Rover Sport L494 Glow Plug Wiring Loom Left N/S FW93-12A378-AB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95B971030FP

Porsche Macan 95B Door Wiring Harness Loom Cable 95B971030FP

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519006401-2

Mercedes W205 C300h 651.921 204HP Engine ECU Kit Key + Ignition A6519006401

€180.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 51794732

Fiat Panda Mk2 Under Bonnet Relay Fuse Box Cover Housing 1.1 Petrol 51794732

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 51984362

Fiat Ducato 2.2 Diesel Multijet Engine Starter Motor Unit 12V DENSO 51984362

€146.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1775405340

Mercedes W177 Door Wiring Harness Cable Loom Front A1775405340

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8E0057185KX

Audi A4 B7 Radio Media Player Audio CD Head Unit Player Concert 8E0057185KX

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4L0919604-1

Audi A6 C6 MMI Multimedia Navigation Display Screen Unit 4L0919604

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G92-10E887-EF

Land Rover Freelander 2 Sat Nav DVD Drive Unit 6G92-10E887-EF

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02M911021B

VW Volkswagen Golf Mk6 Tiguan Mk1 Audi Q3 Mk1 VALEO Starter Motor 02M911021B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-18K891-AA

Range Rover L405 Radio Isolator Module Unit CPLA-18K891-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0906259K-2

Audi A5 F5 Engine ECU Kit 2.0 TFSI DDWA 252HP Quattro Automatic 8W0906259K

€450.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5G4971693B

Volkswagen Golf Mk7 Rear Door Wiring Harness Cable Left N/S 5G4971693B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CX23-14N143-AB

Jaguar XF X250 Negative Battery Terminal Earth Cable Wire CX23-14N143-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0971036J

Audi A1 8X Door Card Wiring Harness Cable Loom Front Passenger Side 8X0971036J

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH42-14B192-AA

Land Rover Freelandr L359 Relay 4-Pin Black 12V 20A Unit AH42-14B192-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-14F041-AH

Land Rover Discovery 4 L319 Fuse Relay Box BCM 3.0 TDI Diesel AH22-14F041-AH

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 98761267000

Porsche Cayman 987 Tailgate Wiring Harness Cable 98761267000

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8577835-3

BMW F30 F31 F10 Engine Control Unit ECU DDE Set Kit FEM N57N Automatic 8577835

€336.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3AF971648

Audi Q5 8R Panoramic Glass Ruuf Sunroof Wire Harness Loom Cable 3AF971648

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6824116

BMW 3 F30 LCI 330e Hybrid High Voltage Battery Wiring Inverter Cable 6824116

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02T911023M

Audi A3 8P 1.6 MPI Petrol Starter Motor Engine 02T911023M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-19C166-AA

Range Rover Vogue L405 Rear Screen Socket USB Output Port Panel CK52-19C166-AA

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3C4971294NL

Volkswagen Passat B6 Control Module Wiring Harness 3C4971694NL

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3W83-9D372-AB

Range Rover Velar L560 Fuel Pump Module Unit ECU 2.0 Diesel 3W83-9D372-AB

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9468428

BMW G20 G30 Cell Monitoring Circuit Cell Supervision Module ECU Control 9468428

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465407811

Mercedes A45 AMG W176 Door Wiring Loom Harness Wire Rear Left N/S A2465407811

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2035407308

Mercedes-Benz C-Class W203 Rear Left Right Door Wiring Loom Harness A2035407308

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971035AR

Audi A5 S5 RS5 8T Door Card Wiring Loom Harness Wire Driver's Side 8T0971035AR

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8200663057

Renault Clio Alternator Mount Bracket Holder Carrier 8200663057

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5Q0907651A

Audi RSQ3 F3 VW Tiguan AD Touran 5T Rear Impact Crash Sensor Left N/S 5Q0907651A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L6035577A

VW Volkswagen Touareg 7L Antenna Aerial Amplifier Control Unit Module 7L6035577A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 057911023EX-1

Audi Q7 4L Engine Starter Motor Actuator Starter 057911023EX

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8A2-19J249-BF

Range Rover Evoque L551 Camera Control Module Unit ECU M8A2-19J249-BF

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005456616

Mercedes W212 Automatic Gearbox EGS Control Module Unit ECU A0005456616

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5R3941329C

Volkswagen Caddy SB AdBlue Module Control Relay 2.0 TDI 5R3941329C

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99161802502

Porsche Boxster 982 718 Cayman Fuel Pump Control Module ECU 99161802502

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1645401908

Mercedes ML W164 Rear Left Door N/S Ribbon Electrical Cable Wiring

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV6T-19A657-ACC

Ford C-Max Mk2 A/C Air Conditioning Wiring Loom Harnecc Cable AV6T-19A657-ACC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2415557

Ford Fiesta Mk8 Battery Earth Cable 1.0 Petrol Ecoboost H1BT-14324-CE

€23.95

Free delivery: Nov 12 – 13

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