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 Discovery L550 Rear Lamp Socket Plug Cable Left N/S FK72-13193-BK

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BMW X5 E70 X6 E71 Onboard Monitor Sat Nav System Display Screen 8,8" 1138730

€56.95

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Part no. A2518703390

Mercedes W251 Rear Passengers Entertainment Control Unit A2518703390

€70.95

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Ignition Coil Mercedes W202 W203 M111 Cable Connector A0001501780

€23.95

Free delivery: Sep 15 – 16

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Part no. 8E0972081

Audi A4 B8 A5 8T 8F Starter Wiring Loom Harness Clip 8E0972081

€23.95

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Audi A4 B7 Subwoofer Bass Speaker Bose 8E5035412D

€23.95

Free delivery: Sep 15 – 16

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Mercedes W205 C200 274.920 184HP Engine ECU Kit A2749000800 Key Lock Automatic

€222.95

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Part no. A2465410100

Mercedes W176 W246 Battery Cover Accumulator Trim Panel Lid A2465410100

€23.95

Free delivery: Sep 15 – 16

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Part no. N8D2-14N178-AA

Land Rover Discovery Sport L550 Hybrid Cooling Fan Link Lead N8D2-14N178-AA

€66.95

Free delivery: Sep 15 – 16

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Part no. 03G906021AQ

Volkswagen Caddy 2K 1.9 TDI BLS 105HP Engine Control Unit ECU 03G906021AQ Manual

€70.95

Free delivery: Sep 15 – 16

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Part no. 5Q0907556C

Volkswagen Tiguan Mk2 Arteon 360° Camera Control Unit Module 5Q0907556C

€294.95

Free delivery: Sep 15 – 16

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Part no. 5F4971029DF

Seat Leon Mk3 5F Door Wiring Loom Cable Front Driver Side O/S 5F4971029DF

€23.95

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Part no. 2K0971121AK

Volkswagen Caddy Mk2 Front Door Wiring Harness Cable Passenger Side 2K0971121AK

€66.95

Free delivery: Sep 15 – 16

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Part no. 5QF959351

Seat Ibiza Mk5 Crash Impact Sensor Accelerator Sensor Control Unit 5QF959351

€23.95

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Part no. A0065454601

Energy Distributor Mercedes W204 OM656 Power Control Unit Module A0065454601

€32.95

Free delivery: Sep 15 – 16

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Part no. 2100493N

Audi A5 8T Seat Cable Front Left Right N/O/S Wiring Loom Harness 2100493N

€23.95

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Part no. 8E0971693P

Audi A4 B7 Door Card Speaker Harness Loom Cable Wiring Rear 8E0971693P

€23.95

Free delivery: Sep 15 – 16

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Part no. A1329002500

Smart C451 Engine Control Unit ECU 1.0 Petrol M132.910 71HP A1329002500 Manual

€94.95

Free delivery: Sep 15 – 16

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Part no. 99161030104

Porsche 718 Boxster 982 Power Distribution Control Unit 99161030104

€313.95

Free delivery: Sep 15 – 16

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Part no. 3D0937576

VW Volkswagen Phaeton 3D Main Fuse Socket Electrical Control Unit 3D0937576

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT-14027-ADD

Ford Fiesta Mk7 Door Wiring Loom Harness Cables Rear Left N/S C1BT-14027-ADD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. CV6T-14K138-MFF

Ford Kuga C520 Front Door Wiring Loom Harness Left N/S Side CV6T-14K138-MFF

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8380118

BMW E46 Amplifier Holder Audio Catch Bracket Mount Trim 8380118

€23.95

Free delivery: Sep 15 – 16

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Part no. 8W6971036BN

Audi S5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971036BN

€70.95

Free delivery: Sep 15 – 16

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Part no. 059911021C

Audi A4 B8 3.0 TDI CAPA Diesel Starter Motor 059911021C

€23.95

Free delivery: Sep 15 – 16

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Part no. 4H0955557

Volkswagen VW Polo 6R 5 Audi A6 C7 Air Module Crash Impact Sensor 4H0955557

€23.95

Free delivery: Sep 15 – 16

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Part no. 03L906022RC

Audi TT 8J 2.0TDI 170HP CBBB Quattro Engine Control ECU 03L906022RC Manual

€142.95

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Part no. 5CU971104

VW Volkswagen Jetta A6 Mk6 Rear Bumper PDC Sensors Wiring Loom Harness 5CU971104

€132.95

Free delivery: Sep 15 – 16

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Part no. 6G9N-10757-AF

Range Rover Evoque L538 L550 Battery Tray Housing Box Panel 6G9N10757AF

€23.95

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Part no. 7E0971158A

Volkswagen Transporter T6 Positive Plus Battery Cable 7E0971158A

€23.95

Free delivery: Sep 15 – 16

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Part no. 7649090

Mini F54 F55 F56 F57 F60 Petrol Engine Starter Motor 7649090

€32.95

Free delivery: Sep 15 – 16

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Part no. 5WA906121

VW Volkswagen Golf Mk8 GTI CD1 4 Motion Fuel Pump Control Unit Module 5WA906121

€66.95

Free delivery: Sep 15 – 16

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Part no. A2034450000

Mercedes Vito W639 Gateway Control Unit Module A2034450000

€28.95

Free delivery: Sep 15 – 16

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BMW F20 F23 F34 F82 Telematics Module Bluetooth Telematik Control Unit 9377155

€142.95

Free delivery: Sep 15 – 16

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Part no. 6832776

Mini Countryman F60 High Voltage Cable Cover Hybrid HV Protection Case 6832776

€56.95

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Part no. 2959574-2

BMW F36 Gran Coupe Headlight Height Level Sensor Rear Right O/S 2959574

€28.95

Free delivery: Sep 15 – 16

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Part no. XUC000072A

Land Rover Discovery 3 Aerial Antenna Amplifier Module Unit ECU XUC000072A

€28.95

Free delivery: Sep 15 – 16

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Part no. 5H2Z-14A686-BA-1

Land Rover Discovery 3 L319 Crash Impact Sensor Left Right N/O/S 5H2Z-14A686-BA

€23.95

Free delivery: Sep 15 – 16

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Part no. GHCT-14A624-AHA

Land Rover Discovery Sport L550 Wire Loom Harness Connector GHCT-14A624-AHA

€23.95

Free delivery: Sep 15 – 16

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Part no. FK72-19C164-ZE

Land Rover Discovery Sport L550 Audio Sound Amplifier Module FK72-19C164-ZE

€113.95

Free delivery: Sep 15 – 16

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Part no. A2519000800

Mercedes W251 PDC Parking Assistant Control Unit Module ECU A2519000800

€56.95

Free delivery: Sep 15 – 16

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Part no. 5Q0971068G

Audi A3 8V VW Golf AU Jetta BU Exhaust Flap Wiring Loom Harness Cable 5Q0971068G

€23.95

Free delivery: Sep 15 – 16

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Part no. 8509226

BMW F31 Diesel Engine Alternator Generator 220A Valeo N57D30A 8509226

€94.95

Free delivery: Sep 15 – 16

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Part no. 6944663

BMW E90 Front Seat Wiring Harness Cable Loom 6944663

€23.95

Free delivery: Sep 15 – 16

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Part no. 7PP919193AF

Porsche Cayenne Turbo 92a Radio CD Player Digital Display Unit 7PP919193AF

€550.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5B61812

BMW X1 U11 GPS Navigation Audio Radio Infotainment Head Unit Control 5B61812

€522.95

Free delivery: Sep 15 – 16

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Part no. 7357827680

Vauxhall Relay C Fiat Ducato Multifunction Display Screen 7357827680

€379.95

Free delivery: Sep 15 – 16

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Part no. 7P5971677

Porsche Cayenne 92A Crash Impact Module Sensor Wiring Harness Cable 7P5971677

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469005413-1

Mercedes C117 Head Unit Radio Player Control Module Becker A2469005413

€379.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7E0035156B-1

Volkswagen Transporter T5 Golf Mk6 Radio CD Player Head Unit 7E0035156B

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. K6D3-9A462-BB

Range Rover Sport L494 Exhaust Heat Shield 3.0 Diesel K6D3-9A462-BB

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5G0971104S

Volkswagen Golf Mk7 Rear Bumper PDC Parking Sensor Wiring Loom 5G0971104S

€28.95

Free delivery: Sep 15 – 16

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Part no. 6927275

BMW E60 E61 E65 E66 Seat Control Module Ecu Sensor 6927275

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06K907425B-27

VW Golf Mk7 5G 2.0 4motion CJXC 300HP Engine Control ECU 8V0906259F Automatic

€180.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0907383E-1

Audi A5 8T Towbar Trailer Hitch Control Module Unit ECU HELLA 8K0907383E

€61.95

Free delivery: Sep 15 – 16

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Part no. AM5T-14D212-EB

Ford B-Max Fiesta Mk7 Focus Mk3 Bluetooth Control Unit Module AM5T-14D212-EB

€23.95

Free delivery: Sep 15 – 16

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Part no. 8T0959793B

Audi A5 8T Sportback Front Door Module Control Unit Driver's Side 8T0959793B

€23.95

Free delivery: Sep 15 – 16

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Part no. 8K0907064JE

Audi A5 8T Body Control Comfort Unit Module BCM Convenience Unit ECU 8K0907064JE

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. EB3T-14603-C

Ford Ranger Mk3 Positive Terminal HV Battery Lead Cable Wire Harness EB3T14603C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FK72-14301-AB

Land Rover Discovery L550 Negative Battery Cable Lead Wire FK72-14301-AB

€23.95

Free delivery: Sep 15 – 16

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Part no. 7L5035225B

Porsche Cayenne 9PA Radio Aerial Antenna Amplifier Unit Rear Left N/S 7L5035225B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9379832

BMW X3 F25 X4 F26 Door Wiring Loom Harness Cable Driver's Side 9379820

€42.95

Free delivery: Sep 15 – 16

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Part no. 6951674-AW

BMW E81 E87 E90 PDC Parking Sensor Ultrasonic Alpine White 3 - 300 6951674

€23.95

Free delivery: Sep 15 – 16

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Part no. 7649755

Mini Countryman F60 Engine Fuse Box Harness Cable Guide B48M 2017-2024 7649755

€23.95

Free delivery: Sep 15 – 16

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Part no. 8U0971035L

Audi Q3 8U Door Loom Wiring Harness Cable Front Right O/S 8U0971035L

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4L0910441B-1

Audi Q7 4L Rear Reversing Camera View Module Control Unit ECU 4L0910441B

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0937084CN

Skoda Superb 3V BCM Body Control Module ECU 5Q0937084CN

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V41-13404-AH-2

Ford Kuga C394 Rear Tail Light Lamp Cable Wire Outer Right O/S 8V41-13404-AH

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. GHCT-14A624-AJA

Land Rover Discovery Sport L550 Wire Loom Harness Connector GHCT-14A624-AJA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FK72-14F041-AB

Land Rover Discovery Sport L550 Fuse Box Relay Module 2.2 Diesel FK72-14F041-AB

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8517616

Earth Ground Cable BMW F10 N47N Diesel Battery Cable Engine Wiring 8517616

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1669005412

Mercedes W166 Door Module Rear Left N/S Control Unit ECU A1669005412

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2K0971557F

Volkswagen VW Caddy 2K Door Harness Loom Cable Wiring Front Left N/S 2K0971557F

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0025421219

Mercedes W168 W203 W211 Relay 6-Pin Black Tyco A0025421219

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1179008700

Mercedes GLA X156 Air Module Safety Belt Tensioner Unit Control A1179008700

€94.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 7E0919475D

Volkswagen Transporter T5 Parking Aid Sensor Control Module ECU 7E0919475D

€85.95

Free delivery: Sep 15 – 16

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Part no. 5A63FF5

Mini F65 F66 F67 Central Bass Speaker Woofer ALEV 3 Left N/S 5A63FF5

€42.95

Free delivery: Sep 15 – 16

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Part no. 8716588

BMW G20 G21 G28 Door Wiring Loom Front Driver's Side 8716588

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0009050410

Mercedes W176 W205 C207 W212 Front Radar Distance Sensor Unit Module A0009050410

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129008729

Mercedes W176 W207 W212 Keyless Module ECU Door Lock Control Unit A2129008729

€23.95

Free delivery: Sep 15 – 16

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Part no. 89A959107-1

Audi A5 F5 Sportback Tailgate Bootlid Control Unit Module ECU 89A959107

€75.95

Free delivery: Sep 15 – 16

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Part no. A2079057501

Mercedes E-Class W207 Cabrio A207 ITS Camera Control Unit Module ECU

€23.95

Free delivery: Sep 15 – 16

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Part no. 8K0941824A

Audi A1 A4 A6 A7 A8 Fuse Box Connector Socket Module Unit 8K0941824A

€23.95

Free delivery: Sep 15 – 16

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Part no. 7L0959772D

VW Touareg Phaeton Heated Seat Control Module Unit 7L0959772D

€23.95

Free delivery: Sep 15 – 16

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Part no. HB3T-14303-DA

Ford Ranger T6 Mk1 Radio Suppresion Cable Wiring Harness HB3T-14303-DA

€37.95

Free delivery: Sep 15 – 16

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Audi A1 8X 1.2 TFSI CBZA Petrol Engine Starter Motor 02T911024JX

€23.95

Free delivery: Sep 15 – 16

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BMW X3 F25 X4 F26 Door Wiring Loom Harness Cable Passenger's Side 9379834

€42.95

Free delivery: Sep 15 – 16

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Mercedes W205 Electrical Ground Line Wire Earth Cable A2055404596

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A41CA2

Air Module BMW F45 F46 Mini F55 F56 F60 ECU Control Unit 5A41CA2

€237.95

Free delivery: Sep 15 – 16

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Part no. 7P6945207-2

VW Touareg 7P Rear Tail Light Lamp Wiring Harness Cable Plug Right O/S 7P6945207

€23.95

Free delivery: Sep 15 – 16

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Part no. A9075404687-1

Mercedes W907 Battery Cable Alternator Wiring Loom Harness Cabling A9075404687

€113.95

Free delivery: Sep 15 – 16

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Part no. LR080305

Land Rover Discovery 4 L319 Engine Starter Motor 3.0 Diesel CPLA-11001-BF

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 80A971235

Audi Q5 Mk2 FY Negative Battery Earth Cable Terminal Lead 80A971235

€28.95

Free delivery: Sep 15 – 16

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Part no. A2045409907

Mercedes W204 Battery Wiring Cable Harness Loom A2045409907

€28.95

Free delivery: Sep 15 – 16

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Part no. 8590019

BMW G30 G31 Engine Wiring Harness Supply Line Cable 530d B57 Diesel 8590019

€142.95

Free delivery: Sep 15 – 16

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Part no. K1BY-12A650-BA

Ford Fiesta Mk8 ST Engine Control Unit Module ECU 1.5 EcoBoost K1BY-12A650-BA

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

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BMW E65 E66 Control Unit Front Centre Console Module 6938664

€23.95

Free delivery: Sep 15 – 16

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Part no. YIE500090

Land Rover Discovery 3 L319 Sat Nav Radio Multimedia Display Screen YIE500090

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

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