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

€42.95

Free delivery: Sep 15 – 16

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Part no. 3C0035195C

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

€70.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A1639800164

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

€32.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 057911023EX

Audi Q7 4L Engine Starter Motor Actuator Starter 057911023EX

€70.95

Free delivery: Sep 15 – 16

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Part no. 4H0919275-NBL

Volkswagen Touran 1T PDC Parking Sensor 4H0919275 Night Blue Metallic - H5X

€23.95

Free delivery: Sep 15 – 16

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Part no. 3449686

Mini Cooper R55 R56 R57 Passive Go Module Control Unit 3449686

€23.95

Free delivery: Sep 15 – 16

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Part no. 7P5971114B

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

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06F903023HX

Volkswagen Golf Mk5 2.0 TFSI Petrol Alternator Generator 06F903023HX

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L906018JR

Audi A4 B8 2.0 TDI CJCB 136HP Engine Control Unit Module ECU 03L906018JR Manual

€66.95

Free delivery: Sep 15 – 16

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Part no. 4E0910888E

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

€28.95

Free delivery: Sep 15 – 16

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Part no. H1BT-14B321-AH

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

€23.95

Free delivery: Sep 15 – 16

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Part no. DG9T-14B534-BD

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

€23.95

Free delivery: Sep 15 – 16

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Part no. 6824128

BMW F45 Mini F60 Hybrid High Voltage Cable Harnes 6824128

€47.95

Free delivery: Sep 15 – 16

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Part no. A0035420219-3

Mercedes W639 W906 Relay 5-Pin Control Unit 12A Blue A0035420219

€23.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. 95861200811

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

€759.95

Free delivery: Sep 15 – 16

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Part no. 5A61AA3

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

€7,599.95

Free delivery: Sep 15 – 16

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: Sep 15 – 16

If paid before 14:00

Part no. A2135400200

Mercedes W205 W213 W238 Fuse Box Cover Control Unit Holder Bracket A2135400200

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YWC107000LUM

Land Rover Discovery 2 L318 Ultrasonic Alarm Sensor Module YWC107000LUM

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8S0971104

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

€23.95

Free delivery: Sep 15 – 16

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Part no. 3Q0971250

Volkswagen Tiguan MK2 Negative Battery Cable Lead Wiring 2.0 TDI 3Q0971250

€23.95

Free delivery: Sep 15 – 16

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Part no. 34089476B

Ford Focus Mk3 Steering Wheel Interior Wiring Loom Multifunction Cable 34089476B

€23.95

Free delivery: Sep 15 – 16

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Part no. 6C4971693E

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

€23.95

Free delivery: Sep 15 – 16

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Part no. CK52-14B079-FE

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

€56.95

Free delivery: Sep 15 – 16

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Part no. BJ32-14632-BC

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

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9217234

Module Bracket BMW X3 F25 X4 F26 Control Unit Holder Carrier 9217234

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0971030AF

Audi A4 S4 B9 Front Door Wiring Harness Loom Cable Passenger Side 8W0971030AF

€42.95

Free delivery: Sep 15 – 16

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Part no. 9383063

Mini Cooper F55 F56 Navigation DAB Head Unit Sat Nav Professional 9383063

€233.95

Free delivery: Sep 15 – 16

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Part no. KPLA-14D550-AA

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

€51.95

Free delivery: Sep 15 – 16

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Part no. CPLA-18D540-AA

Range Rover Vogue L405 Auxiliary Heater Control Module ECU CPLA-18D540-AA

€99.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8575324

BMW F25 Engine Wiring Harness Cable Loom Gearbox Module N57N Automatic 8570642

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469000717

Mercedes C117 X156 All Wheel Drive Control Unit Module ECU MFA A2469000717

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9T11-12A650-HG

Ford Transit Connect Engine Control Unit ECU ECM Module 9T11-12A650-HG

€151.95

Free delivery: Sep 15 – 16

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Part no. A2044401402

Mercedes W204 Parktronic Parking Distance Control Module Unit ECU A2044401402

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AG91-12A650-TP

Ford Mondeo Mk4 2.2 TDCI KNBA 200HP Engine Control ECU AG91-12A650-TP Manual

€317.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 2K5959655B

Volkswagen Caddy Mk4 Air Control Unit Module ECU 2K5959655B

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8582280-13

BMW F20 Engine Control ECU 117HP 116d N47N N47D20C 2.0 Diesel 8582280 Manual

€284.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5N0971858

Volkswagen Tiguan 5N Starter Retainning Plate Holder Bracket Mount 5N0971858

€23.95

Free delivery: Sep 15 – 16

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Part no. 9259581

BMW X3 F25 Map Card Fuse Box Grouping Diagram 9259581

€23.95

Free delivery: Sep 15 – 16

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Part no. CV2T-10C679-BE

Ford Fiesta Mk7 B-Max Battery Negative Terminal Earth Cable CV2T-10C679-BE

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1T0971085E

Volkswagen Touran 1T Rear Bumper Parking Sensor PDC Wiring Loom 1T0971085E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AV6T-14K131-AB

Ford Focus Mk3 Fuse Box Module Under Bonnet AV6T-14K131-AB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2129006417-2

Mercedes W207 W212 Radio Head Unit CD Player Control Panel Switch A2129006417

€61.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9270354-1

Mini F55 F56 BMW F45 X1 F48 Rear Electric Power Distribution Fuse Box 9270354

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6835346

Mini F60 Rear Door Harness Loom Cable Wiring Left Right N/O/S 6835346

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5G0907451

Volkswagen Golf Mk7 Dashboard Sun Solar Sensor 5G0907451

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0971687Q

Audi A4 B8 Door Wiring Harness Cable Loom Rear Left N/S 8K0971687Q

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AH42-10C679-AF

Land Rover Range Rover L322 Battery Negative Terminal Cable AH42-10C679-AF

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8602988

MINI F54 F55 F56 F57 F60 Cable Alternator Starter Wire 8602988

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0959795N

Door Module Audi A4 B8 A6 C6 Rear Unit Control ECU Left N/S 4F0959795N

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8576333-10

BMW F20 F21 Engine Control Unit Diesel N47N 184HP ECU DDE Set 8517862 Automatic

€132.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8634124

BMW F40 F45 X1 F48 Mini F55 F56 F60 Alternator Generator Denso 120A 8634124

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8J0907159

Audi TT 8J Alarm Signal Body Sound Impact Control Module Unit 8J0907159B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. XRA500030

Land Rover Discovery 3 L319 Traffic Control Module Receiver Unit XRA500030

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DK62-14300-AE

Range Rover L405 Positive Battery Cable Wiring Terminal Module DK62-14300-AE

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YC1A14B321CC

Ford Transit MK6 Restraints Control Module Air Module Unit YC1A14B321CC

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0959795A

Audi A6 4F C6 Door Control Unit Module ECU Rear Left N/S 4F0959795A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9380940

BMW F45 Front Door Wiring Passenger Door Cable Wiring Loom Harness 9380940

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F1862335

Audi Q7 4L Bluetooth Interface Telephone Control Module ECU Unit 4F1862335

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7G9T-14A073-DD

Ford Mondeo Mk4 Body Control Module BCM Fuse Box Junction 7G9T-14A073-DD

€89.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2028281114

Mercedes-Benz C CLK W202 W208 Alarm Control Module Bracket Holder A2028281114

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 3C8971557AN

Volkswagen Passat CC Front Door Wiring Loom Harness Right O/S 3C8971557AN

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2044400235

Mercedes C204 Front Bumper Wiring Harness Loom Cable A2044400235

€66.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK3T-14335-AC

Ford Transit Mk8 Anti Theft Alarm Wiring Harness Loom Cable BK3T-14335-AC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8K0941597F-1

Porsche Boxster 718 982 Headlight LED Ballast Control Module Unit 8K0941597F

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BK2T-18C847-AA

Ford Tourneo Custom Aerial Antenna Amplifier Control Unit BK2T-18C847-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7369120-2

BMW F30 F31 LCI Plug Socket Rear Right O/S Light Trunk Lid Boot Wiring 6984754

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DE8T-19H463-DA-1

Ford Focus Mk3 Fiesta Mk7 Windscreen Rain Sensor Unit Module DE8T-19H463-DA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5M0035507B

Volkswagen Golf Gti 1k Aerial Antenna Amplifier Module Unit 5M0035507B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. KT1T-14G087-EN

Ford Transit Custom Mk8 Bluetooth Control Module ECU KT1T-14G087-EN

€123.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1K0937700B

Volkswagen VW Caddy 2K Fuse Box Control Module Connector Plug Socket 1K0937700B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9270500

BMW X3 E83 PDC Parking Ultrasonic Sensor Angled Schwarz

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8200112746

Nissan Primastar X83 Renault Trafic II Air Module Control Unit ECU 8200112746

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9252819

BMW F01 F07 F10 F11 F12 Camera Module Based Assist Systems Control Unit 9252819

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9390576

Airbag Module BMW X1 F48 F45 F46 Air Bag Control Unit ECU 9390576

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9386929

BMW F22 F23 LCI Rear Bumper PDC Cables Wiring Loom Set 79720211

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1J0973332A

Audi RS4 B8 Cable Loom Wiring Plug Socket 2 Pins 1J0973332A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9118108

BMW 1 Series E81 E82 Wiring Set Door Co-driver 9118109

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8510221-3

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8J0971679B

Audi TT 8j TTS Glove Box Dash Panel Storage Wiring Cable Harness Wire 8J0971679B

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9247024

BMW F01 LCI F07 GT F10 F11 X3 F25 Air Module Control Unit ECU 9247024

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V4971030K

Audi A3 S3 8V Front Passenger Door Wiring Harness Loom Cable 8V4971030K

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0959592K

Audi Q2 GA Door Module Control Unit Front Passenger Side 5Q0959592K

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W6971029BF

Audi A5 F5 Front Door Wiring Harness Cable Driver's Side 8W6971029BF

€85.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6972064

BMW 1 3 X1 SERIES E81 E87 E90 E91 E92 Ultra Sonic Module Alarm System 6972064

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P5906033

Porsche Cayenne 92A 4.8 500HP Engine Control Unit ECU 7P5906033 Automatic

€165.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. M8A2-14A076-AA

Range Rover Velar L560 Fuse Box Unit Upper Cover Cap Trim M8A2-14A076-AA

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9268710-1

BMW F01 Display Screen On-Board Central Information Monitor 10,25" 9241819

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7589639

BMW F87 M2 N55 Ignition Coil Injectors Wiring Loom Harness 7589639

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9325723

BMW G30 G31 Suppression Filter Aerial Antenna Amplifier Module 9325723

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F1971687A

Audi A6 RS6 C6 Door Wiring Loom Cable Rear Right Left N/O/S 4F1971687A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2208203085

Mercedes C199 C215 W220 Air Module ECU Control Unit S430 113941 A2208203085

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 05C907394D-1

Audi A1 GB Mk2 Engine Module ECU Kit 1.0 TSI Petrol 110HP DLAA 05C907394D Manual

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2139001909

Mercedes W213 Ambient Lighting Control Unit Module ECU A2139001909

€56.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A43722

BMW X1 U11 Wiring Loom Harness Cable 5A43722

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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