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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Range Rover Sport L494 Rear Door Wiring Loom Harness Left N/S KK62-14687-JD

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Free delivery: Nov 12 – 13

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Mini R50 R53 Headlight Aim Range Control Unit Module ECU Xenon 8383551

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Free delivery: Nov 12 – 13

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Range Rover L405 Front Rear Seat Memory Heating Module DPLA-14C725-CA

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Free delivery: Nov 12 – 13

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€99.95

Free delivery: Nov 12 – 13

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BMW Z4 E85 Roadster Cabrio Convertible Roof Folding Top Module Unit 6925897

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BMW G30 SME BK2 Body Control Module Unit ECU 9847111

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Audi A1 8X 1.6 TDI 105HP CAYC Engine Control ECU Kit BCM Key 03L906023KQ Manual

€132.95

Free delivery: Nov 12 – 13

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Part no. 3AF945094J-2

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€23.95

Free delivery: Nov 12 – 13

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Part no. 1K0971349B

VW Golf Mk6 Seat Leon Mk2 Alternator Main Cable Wiring Harness Loom 1K0971349B

€23.95

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Part no. CB250-FUSE

Honda CB250 CB 250RS Fuse Box Electrical Unit Cable Wiring

€23.95

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Porsche 718 Boxster 982 Cayman 981 Battery Bracket Holder Mount 99161121200

€28.95

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Part no. 5A167A6

BMW G20 DAB Receiver Audio Module RP Sound System Amplifier Module 5A167A6

€189.95

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Alternator Cable Mercedes W176 W246 OM651 Battery Prefuse Box A2465400308

€23.95

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Part no. 5Q0907686B

Volkswagen Golf R 5G Blind Spot Control Module Unit ECU 5Q0907686B

€94.95

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Part no. A4535402703

Smart ForTwo C453 Battery Negative Minus Wiring Cable A4535402703

€32.95

Free delivery: Nov 12 – 13

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Part no. A2518201964-2

Mercedes W251 Tail Light Lamp Side Panel Harness Loom Rear Left N/S A2518201964

€23.95

Free delivery: Nov 12 – 13

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Part no. LK72-14E168-BA

Land Rover Discovery L550 Front Seat Memory Wiring Link Cable LK72-14E168-BA

€28.95

Free delivery: Nov 12 – 13

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Part no. 6Q0959433H

Volkswagen Polo Mk4 9N Central Locking Comfort Control Unit Module 6Q0959433H

€23.95

Free delivery: Nov 12 – 13

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Part no. 5A42CC4

BMW F40 F44 Alpine CD Sat Nav Head Unit High 3 5A42CC4

€332.95

Free delivery: Nov 12 – 13

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Part no. 079911021D

Audi Q7 4L Engine Starter Motor Actuator Starter 079911021D

€23.95

Free delivery: Nov 12 – 13

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Part no. CX23-18C847-CA

Jaguar XF X250 Aerial Antenna Amplifier Module Unit CX23-18C847-CA

€23.95

Free delivery: Nov 12 – 13

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Part no. 03L906018H-1

Audi A4 B8 Engine Control Unit ECU Module 2.0 Diesel 143HP Automatic 03L906018HT

€137.95

Free delivery: Nov 12 – 13

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Volkswagen Golf Mk7 Jetta A6 Scirocco Mk3 Starter Motor 02Z911024

€23.95

Free delivery: Nov 12 – 13

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Part no. A1715400407

Mercedes R171 Door Courtesy Lamp Light Wiring Loom Harness Cable A1715400407

€23.95

Free delivery: Nov 12 – 13

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Part no. CH22-18D493-AC

Land Rover Discovery 4 L319 Heater A/C Module Controle ECU CH22-18D493-AC

€28.95

Free delivery: Nov 12 – 13

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Range Rover Evoque L538 Front Seat Control Module Driver's Side HY32-14D600-CB

€47.95

Free delivery: Nov 12 – 13

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Part no. E83-SCREEN

BMW X3 E83 Head Unit GPS Navigation Display Screen Android Auto CarPlay 9"

€284.95

Free delivery: Nov 12 – 13

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Audi A6 C7 4G Rear Door Harness Wiring Loom Cable Left Right N/O/S 4G5971687BR

€32.95

Free delivery: Nov 12 – 13

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Skoda Octavia MK3 5E Radio Player Sat Nav Multimedia Head Unit 5Q0035842A

€203.95

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BMW E60 E61 Active Steering Dynamic Drive Control Unit ECU 6781462

€275.95

Free delivery: Nov 12 – 13

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Range Rover Evoque L538 Centre Console Wiring Loom Harness Cable HJ32-14K042-BB

€23.95

Free delivery: Nov 12 – 13

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Part no. KK62-14B518-JD

Range Rover Sport L494 Rear Door Wiring Loom Harness Right O/S KK62-14B518-JD

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14D618-BD

Range Rover L405 Door Control Unit Module Front Driver's Side HPLA-14D618-BD

€32.95

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Ford Transit Mk8 Rear View Parking Camera Backup Camera CK4T-19G490-AB

€132.95

Free delivery: Nov 12 – 13

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Audi A3 8l TT TTS 8N Fusebox Fuse Relay Box Cover Lid Top End Cap 1J0941365B

€23.95

Free delivery: Nov 12 – 13

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Part no. 2522564

Ford Transit Mk8 Starter Positive Plus Wiring Loom Harness KK3T-14A120-BD

€23.95

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Heater Resistor Volkswagen VW Touran 1T Blower Motor Fan Resistor 3C0907521

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Free delivery: Nov 12 – 13

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Part no. 5A63FF6

Mini F65 F66 F67 Central Bass Speaker Woofer ALEV 3 Right O/S 5A63FF6

€42.95

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VW Volkswagen Sharan 7N Passenger's Side Door ECU Module Control Unit 7N0959792F

€32.95

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BMW X3 F25 Central Gateway Module Control Unit Lear ZGW-02 4SK 8781328

€47.95

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Mercedes-Benz E W207 Cabrio A207 Auxilliary Battery Bracket A2075452540

€23.95

Free delivery: Nov 12 – 13

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Part no. 1825318-2

Ford Focus Mk3 Rear Tail Light Lamp Wiring Loom Harness Right O/S BM51-13404-AK

€23.95

Free delivery: Nov 12 – 13

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Part no. 9282424

BMW 3 5 Series F10 F30 Control Unit Module Top Rear Side View Camera 9282424

€89.95

Free delivery: Nov 12 – 13

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Part no. 8T2T-14B192-AB

Ford Mustang GT Mk6 Main Power Relay 4 Pins 8T2T-14B192-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. H1BT-18808-GB

Ford Puma St Cf7 Loud Speaker Door Speaker Rear Left Right N/O/S H1BT-18808-GB

€28.95

Free delivery: Nov 12 – 13

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Part no. F1CT-19G481-AJ

Ford Kuga Mk2 Keyless Entry Control Module ECU Unit F1CT-19G481-AJ

€23.95

Free delivery: Nov 12 – 13

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Part no. GE4V67830

Ford Ranger Mk4 Central Door Lock Locking Control Relay Module Unit GE4V67830

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C2Z13069

Jaguar XF X250 Rear Door Control Module Lefr Right N/O/S 7G9T14B534BF C2Z13069

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0008208305

Mercedes C118 Seat Inflation Occupancy Sensor A0008208305

€104.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2885021020

Toyota Avensis T270 Negative Battery Ground Cable Lead 1.8 Petrol 2885021020

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 12147520019-01

Mini Cooper R50 R56 Engine Control Unit ECU DME 12147521549 7521549

€23.95

Free delivery: Nov 12 – 13

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Part no. JU5T-17D547

Ford Ranger Mk3 Windscreen Rain Sensor Module Control Unit JU5T-17D547

€23.95

Free delivery: Nov 12 – 13

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Part no. GX63-15C859-DM

Land Rover Discovery Sport L550 PDC Parking Module Control Unit GX63-15C859-DM

€32.95

Free delivery: Nov 12 – 13

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Part no. LR137256

Land Rover Discovery Sport L550 Cable Inline Generator Wirnig Harness LR137256

€123.95

Free delivery: Nov 12 – 13

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Part no. GB5T-15K619-BD

Ford Tourneo Custom Minibus Passenger Headlight Control Unit GB5T-15K619-BD

€23.95

Free delivery: Nov 12 – 13

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Part no. 9274023

BMW F20 F21 F30 F31 REM Rear Electronic Module Fuse Box Control Unit V3 9274023

€66.95

Free delivery: Nov 12 – 13

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Part no. 8519005-1

BMW X1 E84 18dX Diesel N47N Engine Control Unit ECU Kit DDE 8519005 CAS3 Key

€85.95

Free delivery: Nov 12 – 13

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Part no. 0C8927750BP

Volkswagen Touareg Mk2 7P Gearbox Control Unit Module ECU 0C8927750BP

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2045409433

Mercedes W204 Front Door Wiring Loom Harness Cable Right O/S A2045409433

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7E0937089C

Volkswagen Amarok 2H Body Control Module BCM Unit 3.0 Diesel 7E0937089C

€203.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14F041-BH

Jaguar XF X260 Body Control Module Processor BCM ECU Unit Module HPLA-14F041-BH

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7P5035225M

Porsche Cayenne 92A Antenna Aerial Amplifier Module Control Unit 7P5035225M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99764504501

Porsche 911 997 Cabrio Speaker Loudspeaker Unit 99764504501

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8J0945095C-1

Audi TT 8J Rear Tail Lamp Light Wiring Harness Cable Plug Left N/S 8J0945095C

€108.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0907063DH

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€127.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99661011100

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€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Q0919283

Volkswagen EOS Park Aid Sensors PDC Control Module Unit ECU 1Q0919283

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0959121A

Audi A4 B9 A5 F5 Air Module Pedestrian Protection Sensor Crash 8W0959121A

€113.95

Free delivery: Nov 12 – 13

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Part no. 1393415

BMW 3 5 7 Series E36 E38 E90 E91 F10 F11 Change-Over Contact Relay Grey 1393415

€23.95

Free delivery: Nov 12 – 13

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Part no. 7P0937548H

Porsche Cayenne 92A Battery Distribution Fuse Box Relay Module 7P0937548H

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. MX73-11001-AC

Land Range Rover Velar L560 Starter Motor 12V 2.0 Diesel AJ20D4 MX73-11001-AC

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469002603-1

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KV6T-14B060-AAF

Ford Transit Connect Battery Cable Engine Wiring Harness Loom KV6T-14B060-AAF

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6841603-2

Mini F55 F56 Radio Mini Basis CD Player Head Unit Alpine 6818045 TB00004A

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW X3 F25 X4 F26 Central Gateway Control Module ECU Unit 9286952

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0953549BS-1

Skoda Octavia II Steering Wheel Position Angle Control Unit Module 1K0953549BS

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N1XT-14D338-ADC

VW Volkswagen Amarok NF Wiring Harness Loom Cable N1XT-14D338-ADC

€23.95

Free delivery: Nov 12 – 13

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Part no. 1825321-2

Ford Focus Mk3 Rear Tail Light Lamp Wiring Loom Harness Left N/S BM51-13405-AK

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009067702-2

Mercedes W204 W207 W212 Alternator Generator Diesel Engine 180A 14V 209189R

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. N000000004325

Mercedes W169 W204 W211 C219 Replacement Fuse Kit Set N000000004325

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8519663-11

Mini Cooper D R60 ALL4 N47N 143HP 2.0 Engine ECU Kit DDE 8519663 + CAS3 + Key

€142.95

Free delivery: Nov 12 – 13

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BMW X5 E70 X6 E71 X6 E72 Map Fuse Box Grouping Diagram Card 9177784

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0937086BK-1

Volkswagen Golf Sportsvan Body Control Comfort Unit Module BCM Unit 5Q0937086BK

€80.95

Free delivery: Nov 12 – 13

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Ford Ranger Mk3 A/C Climate Control Sun Light Sensor Unit EB3T-14A597-BA

€28.95

Free delivery: Nov 12 – 13

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Part no. 5CH971121E

Volkswagen Jetta A6 Mk6 Front Door Wiring Harness Cable Driver Side 5CH971121E

€56.95

Free delivery: Nov 12 – 13

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Range Rover Sport L320 PDC Parking Sensor Module Control Unit AH42-15K866-BE

€56.95

Free delivery: Nov 12 – 13

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Part no. CPLA-14Q073-AA

Range Rover Discovery Sport L550 Fuse Box Control Module CPLA-14Q073-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW E60 E61 E63 Air Module ECU Control Unit Centre Vehicle Sensor 6946113

€37.95

Free delivery: Nov 12 – 13

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Toyota Corolla E12 Fuse Box Relay Module Unit 1.6 VVTi 82641-02060

€23.95

Free delivery: Nov 12 – 13

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Audi Q3 F3 Front Bumper Wiring Harness Loom 83A971085S

€85.95

Free delivery: Nov 12 – 13

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BMW F01 Wiring Loom Cable Harness 9211840

€28.95

Free delivery: Nov 12 – 13

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Part no. 9259425-3

BMW F30 F31 F80 M3 F82 M4 Positive Battery Cable Plus Pole 9259425

€23.95

Free delivery: Nov 12 – 13

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Part no. 4X43-15K866-AE

Jaguar X-Type X400 Parking Aid Distance Assist Control Module 4X43-15K866-AG

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

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BMW E60 E61 E87 LCI E81 E82 X1 E84 E90 E91 N47 Diesel Starter Motor 7798006

€23.95

Free delivery: Nov 12 – 13

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Part no. 31409364

Volvo V40 Relay Fuse Box Start Stop Relay Plus Wiring Harness 31409364

€28.95

Free delivery: Nov 12 – 13

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Part no. 3D17-01-3M5T-DC

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€32.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Part no. 7M150S

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€142.95

Free delivery: Nov 12 – 13

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