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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Mercedes X253 Electrical Wiring Harness Cable Hybrid A2135400329

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6541592501

Mercedes W213 OM654 Engine Wiring Cable Cover Duct Bracket Channel A6541592225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AG91-12A692-BB

Ford S-Max Mk1 Engine Control Module ECU Unit Bracket Mount AG91-12A692-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99760302205

Porsche Cayman 987C Boxster 987 911T Alternator Generator 150A 14V 99760302205

€232.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BJ32-15C670-AB

Range Rover Evoque L538 Sunroof Roof Blind Sun Blind Wire Harness BJ32-15C670-AB

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JS7T-18D818-JB

Ford Mondeo Mk5 Radio Stereo Audio System Head Control Unit ECU JS7T-18D818-JB

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B8A045

Mini F65 F66 F67 BMW G60 G61 Fuel Pump Control Unit Module ECU 5B8A045

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2514404213

Mercedes V251 Front Bumper PDC Wiring Harness A2514404213

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8570934-1

BMW F20 F21 116d ed Diesel N47N 116HP ECU Kit DDE 8570934 + Key + FEM Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2269553-1

Ford Focus Mk3 Radiator Fan Control Module Unit 940002906

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9196935

Seat Module BMW X1 E84 E87 E90 E91 Seating Control Unit ECU 9196935

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906023PT

Audi A3 8P 1.6 TDI 105HP CAYC Diesel Engine Control Unit ECU Module 03L906023PT

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218210197

Mercedes W221 Cover Wiring Cable Front Door Protection Seal Sleeve A2218210197

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1438941

BMW X5 E53 Ground Cable Alternator Petrol 1438941

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0971727S

Audi Q7 4M Fuel Tank Pump Wiring Loom Harness Cable Pump Plug 4M0971727S

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X2T-14A075-AA

Jaguar XF X250 Fuse Relay Box Cover Panel Trim 8X2T-14A075-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CK52-14633-AE

Range Rover L405 Door Wiring Loom Harness Cable Rear Left N/S CK52-14633-AE

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2002155

Ford Focus Mk3 III Negative Minus Ground Battery Terminal Cable F1FT-14324-CBD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV21-12A650-HG

Ford Fiesta Mk7 Engine ECU + Ignition Switch + Key 1.6 TDCi 95HP AV21-12A650-HG

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. F1B1-12A650-AMB-1

Ford Fiesta Mk7 ECU 1.0 EcoBoost 100hp Manual + Key F1B1-12A650-AMB

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BV61-12A650-DGA

Ford Focus Mk3 1.6 TDCi 115HP Engine Control Unit ECU BV61-12A650-DGA Manual

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9143302

BMW E93 Cabrio Convertible Rear Wiring Loom Harness Trunk Lid 9143302

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99761843601

Porsche 911 Cayman 987 Cooling Air Control Unit Fan Control Module 99761843601

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-3K772-BA

Jaguar XF X250 Steering Column Lock Module Control Unit 8X23-3K772-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM5T-18C815-XM

Ford Fiesta Mk7 Radio CD Player Audio Stereo Head Unit AM5T-18C815-XM

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9188877

BMW F01 F02 F03 F10 F11 Steering Column Adjuster Switch 9188877

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1568200089

Mercedes W176 W246 Tailgate Aerial Antenna Amplifier Unit A1568200089

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2135401217

Mercedes W213 OM642 Diesel Engine Alternator Wiring Loom Harness A2135401217

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B5D976

BMW F74 Gran Coupé Engine Control Unit Module ECU 220i B38N 170HP 5B5D976 Manual

€341.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465403005

Mercedes W176 W245 Front Right Door Wiring Loom Harness A2465403005

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4RD965453

Audi S3 8V Multi Use Relay 5 Pin Black 4RD965453

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K9035225P

Audi A6 C8 A7 4K Rear Antenna Aerial Amplifier AMP 4K9035225P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B44D47

BMW F40 F44 F70 G20 G21 G22 Audio Sound Amplifier Module 5B44D47

€227.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8612578

BMW F45 HV Accumulator Battery Negative Ground Cable Wiring Plug 8612578

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018KD-1

Audi A4 B8 All Road 2.0 TDI CGLC 177HP Quattro Engine ECU Kit 03L906018KD Manual

€237.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9151517

BMW E61 Touring Body Control Module ECU Unit E6X KBM High 9151517

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0959655

Audi A5 S5 8F Air Module Control Unit ECU Crash Control Crash Data 8F0959655

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8714367

BMW F40 Door Wiring Harness Rear Left Right Door N/O/S Wiring Loom 8714367

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009828323

Mercedes W176 W246 Power Relay Control Module 5 Pin 12V A0009828323

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8580061

BMW F40 F48 Mini F55 F56 Battery Starter Cable Wiring Loom B47B B47D 8580061

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6934021

BMW 7 Series E65 E66 Front Left Right Door N/O/S Wiring Loom Harness 6920291

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698201185

Mercedes W169 W245 Front Door Control Unit Module Left N/S A1698201185

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7541084

Mini Cooper Cabrio R52 Battery Cable Plus Pole 7541084

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6269010000-1

Mercedes W205 C200d 626.951 136HP Engine Unit ECU Kit A6269000000 Automatic

€427.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9313636

BMW F30 LCI Cable Harness Loom Front Door Wiring Left N/S 9313636

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03C906016FR-1

Audi A1 8X 1.4 TFSI CAXA 122HP Engine Control ECU Kit 03C906016FR Manual

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. K8D2-15K622-AB

Land Rover Range Rover Evoque L551 Comfort Control Module ECU K8D2-15K622-AB

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M8D2-14E159-AJ

Range Rover Evoque L551 Adaptive Drive Control Module ECU M8D2-14E159-AJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6541592200

Mercedes X253 Engine Wiring Cable Cover Duct Bracket Channel OM654 A6541592200

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. MK83-14E159-AK

Range Rover Velar L560 Air Module Control Unit ECU MK83-14E159-AK

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. L8B2-14D619-AG

Land Rover Range Rover Velar L560 Door Module Rear Left N/S L8B2-14D619-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1EA907376B

Audi A3 S3 8Y Rear Suspension Damper Module Control Unit ECU 1EA907376B

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2118700026

Bluetooth Module Mercedes W203 W211 W219 Control Unit Hands Free A2118700026

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6079002000

Mercedes W176 A180 CDI 607.951 109HP Engine Control Unit ECU A6079002000 Manual

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. JT7610723AC

Ford Transit Courier Battery Tray Housing Cover Support Holder Mount JT7610723AC

€75.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. PJ7T-19G490-BB

Ford Ranger Mk6 Volkswagen Amarok Mk2 Parking Camera PJ7T-19G490-BB

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. ML34-13C148-AE

VW Volkswagen Amarok NF Front Lamp Headlight Control Unit Module ML3413C148AE

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02M911023M

Volkswagen VW Golf Mk5 1.6 2.0 GTI Petrol Engine Starter Motor 02M911023M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 51763008-2

Fiat Panda Mk2 Rear Tail Light Lamp Wiring Harness Cable Right O/S 51763008

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH32-18B008-AE

Suspension Control Unit Land Rover Range Rover L320 ECU Module AH32-18B008-AE

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KK21-12A650-FA-2

Ford Transit Custom 2.0 EcoBlue 130HP Engine ECU Kit KK2112A650FA Automatic

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0915333

Audi A3 8P Battery Box Tray Housing Holder Bracket Cover Mount 1K0915333

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698207526-1

Mercedes W169 W245 Door Control Unit Left N/S Rear A1698207526

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 95563148602-2

Porsche Cayenne 9PA Lamp Light Taillight Rear Right O/S Harness Wire 95563148602

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971516A

Audi A8 D4 Steering Column Adjustment Wiring Harness Loom Cable 4H0971516A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HC34-5H297-AA

Ford Transit Mk8 2.0 EcoBlue AdBlue Module Control Unit HC34-5H297-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8792845

BMW X3 G01 Door Wire Loom Driver Side Front Right O/S 8792845

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. RAC-ADVANCE

RAC Advance GPRS OBD2 Tracker Reader Module Unit LMU30G60BT

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1697220180

Mercedes-Benz A-Class W169 Door Plug Cover Trim Insert Blank Seal A1697220180

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CC1T-9K499-MLE

Ford Transit Mk7 Fuse Box Wiring Loom Harness Under Bonnet Unit CC1T-9K499-MLE

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7H22-13N850-AA

Land Rover Discovery 3 L319 Negative Earth Cable Wiring Harness 7H22-13N850-AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0971228AH-1

Audi A5 8T Positive Battery Lead Terminal Wiring Cable 2.0 TFSI 8K0971228AH

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 886500D250

Toyota Yaris P9 Air Conditioning A/C Amplifier Control Unit Module 886500D250

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0111549102

Mercedes W163 W203 C209 W2011 W220 Alternator Generator 14V 120A A0111549102

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009004404

Mercedes W212 S212 C207 Parking Sensor Control Module PDC A0009004404

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C2Z4723

Jaguar XF X250 150 Amp Mega Fuse Box Fuse Relay Unit Module F6HT-14A094-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0971250

Audi A3 8P HV Battery Negative Earth Cable Harness Wiring Terminal 5N0971250

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139009119-1

Mercedes W213 Body Control Module BCM SAM Unit Module 2.0 Diesel A2139009119

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8D0951253

Audi Q7 4L Relay Unit Module 4 Pins 8D0951253

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8616042110

Toyota RAV4 Mk2 Rear Door Speaker Module Audio Unit Left Right N/O/S 8616042110

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0009001705

Mercedes C117 PDC Parking Sensor Control Module Unit ECU A0009001705

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8577625-4

BMW F20 F21 116d N47N 116HP Engine Control Unit DDE ECU Kit 8577625 Manual

€222.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9350002

BMW F01 F07 F10 F11 X3 F25 Control Unit Air Module ECU Unit Continental 9350002

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1698201285

Mercedes W169 W245 Front Door Control Unit Module Right O/S A1698201285

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9240946

MINI R55 R56 R57 LCI R60 R61 Cover Power Distribution Fuse Box 9240946

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. L9W3-14D550-BA

Land Rover Range Rover Velar L560 Inverter Converter Cooling Fan L9W3-14D550-BA

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4869810-4

BMW E82 E88 Taillight Tail Light Lamp Right Rear O/S Wire Harness Loom 7285642

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8621019

BMW G01 G11 G12 G20 G30 Battery Cell Module Connector Harness Loom Cable 8621019

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0959792N

Audi A5 F5 Door Module Control Unit Module ECU Front Passenger Side 4M0959792N

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2465400213

Mercedes W242 W246 Multifunction Camera Wiring Loom Harness Cable A2465400213

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9847136

BMW X1 U11 High-Voltage Battery Terminal Strip Insulation Plate Support 9847136

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5H9971694S

VW Volkswagen Golf Mk8 Rear Door Cable Harness Wiring Loom Right O/S 5H9971694S

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0862335D

Audi A4 B8 Bluetooth Multimedia Interface Control Module Unit ECU 8T0862335D

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8589168

Alternator Harness BMW X3 G01 X4 G02 30dX 40dX B57 Cable Base B+ Loom 8589168

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6F0035225

Seat Ibiza Mk5 KJ1 Antenna Amplifier Aerial Module Control Unit 6F0035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5090031

Ford Kuga Mk3 Puma Air Temperature Sensor AUC Air Conditioning AU5T-12A647-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2229008811

Mercedes W205 C300h Heater Control Module Unit ECU A2229008811

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1Z0919475B

Skoda Yeti 5L Octavia Mk2 Parking Distance Control Unit Module PDC 1Z0919475B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0-727-43

DURITE 12V Smart Programmable Voltage Sensitive Split Charge Relay 0-727-43

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

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