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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BMW F10 F11 520d Diesel N47N 184HP Engine ECU Kit DDE 8513242 CAS4 + Key Manual

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Volkswagen Crafter 35 Radio CD Player Navigation Unit Screen Display A9069009100

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Audi A4 B7 Seat Exeo Engine Wiring Loom Plug Plastic Holder Bracket 8E0971845AC

€23.95

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Starter Harness BMW X3 G01 X4 G02 30dX 40dX B57 Cable Base B+ Loom 8589170

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VW Volkswagen Amarok Mk2 Auto Brake Trailer Module Control Unit P1WT-19H517-AE

€123.95

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Ford Focus Mk3 Air Module Control Unit ECU Controller BM5T-14B321-CF

€28.95

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Audi A6 C6 Comfort Body Module Fuse Relay Box Control Unit 4F0971845A

€23.95

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VW Golf MK5 6 Audi A3 8P Positive Battery Terminal Cable 1K0971228L

€23.95

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Part no. 9383681-1

Mini F55 Fuse Box Front Body Control Module ECU BCM Unit 13275881

€113.95

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Part no. 7839665

BMW E90 E92 E93 LCI M3 S65 Cable Alternator Starter Wiring 7839665

€75.95

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Part no. A1648200564-2

Mercedes GL X164 Rear Lamp Side Panel Light Plug Socket Left N/S A1648200564

€23.95

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Part no. C1BT-14027-ACF

Ford Fiesta Mk7 Door Wiring Loom Harness Rear Left N/S C1BT14027ACF 2008887

€42.95

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Engine Wiring BMW F10 F21 F30 LCI F36 N20 Loom Module Harness Cable 8605454

€66.95

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Door Module Mercedes W205 GLC C253 Control Unit Rear Right O/S A2229002112

€23.95

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Part no. 5H2Z-14B345-BA

Land Rover Discovery 3 L319 Crash Impact Sensor Air Module 5H2Z-14B345-BA

€23.95

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Porsche Cayenne 9PA Rear Door Wiring Harness Cable Left Right N/O/S 7L5971693B

€23.95

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Part no. 9131731

BMW E81 E82 E88 E92 Driver Seat Wiring Memory Loom Harness Cable 9131731

€28.95

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Land Rover Discovery 4 L319 Front Headlight Wiring Right O/S AH22-13W029-FD

€23.95

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Part no. 8585380

BMW X3 F25 X4 F25 30dX N57N 258HP Engine Control ECU DDE 8585380 Automatic

€284.95

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Part no. 1K0953549DB

Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 1K0953549DB

€23.95

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Part no. 4G8907368

Audi A7 4G Body Convinience Module Control Unit Bracket Mount Holder 4G8907368

€23.95

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Part no. A2059002922

Door Module Mercedes W205 W253 C253 Front Left N/S Control Unit ECU A2059002922

€32.95

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Part no. 8T8035225C

Audi A5 8T Audio Radio Aerial Amplifier Control Unit 8T8035225C

€23.95

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Part no. A2649001000

Mercedes W205 Petrol Engine Alternator Electrical Cable A2649001000

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Part no. F1FT-19G481-AH

Ford Focus Mk3 ST Keyless Entry Comfort Control Module Unit F1FT-19G481-AH

€23.95

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Part no. A2475451101

Mercedes C118 W177 C247 Fuse Box Module Cover Cap Trim Housing M282 A2475451101

€32.95

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Part no. 8E0910115K-1

Audi A4 B7 Engine Control ECU 2.0 TFSI BWE 200HP Manual 8E0910115K

€142.95

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Part no. FK72-14D618-BE

Land Rover Discovery Sport L550 Door Control Module Driver's Side FK72-14D618-BE

€28.95

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BMW X5 Series E53 Battery Cable Plus Pole 1439559

€23.95

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Part no. 6H52-10E889-AD

Land Rover Freelander 2 L359 Radio Sat Nav Display Touch Screen 6H52-10E889-AD

€75.95

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Volkswagen Touareg 7P Radio Navi CD Player Head Unit Mount Bracket 7P6035209

€23.95

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Mercedes W205 Negative Cable Battery Lead Minus Pole Wiring A0005400564

€23.95

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Fuse Box Mercedes W205 W213 Front Engine Compatment Relay Module A2139065706

€51.95

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Mercedes X253 Electrical Wiring Harness Cable Hybrid A2135400329

€89.95

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Part no. A6541592501

Mercedes W213 OM654 Engine Wiring Cable Cover Duct Bracket Channel A6541592225

€23.95

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Part no. AG91-12A692-BB

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

€23.95

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

€232.95

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

€47.95

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

€237.95

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Audi A3 8P CFFB 2.0 TDI 140HP Diesel Engine Control Unit ECU 03L906018AB Manual

€51.95

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

€123.95

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Mercedes V251 Front Bumper PDC Wiring Harness A2514404213

€75.95

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Part no. 8570934-1

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

€237.95

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Part no. 9196935

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

€28.95

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Part no. A2218210197

Mercedes W221 Cover Wiring Cable Front Door Protection Seal Sleeve A2218210197

€23.95

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Part no. 1438941

BMW X5 E53 Ground Cable Alternator Petrol 1438941

€23.95

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Part no. 4M0971727S

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

€28.95

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Part no. CK52-14633-AE

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

€32.95

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Part no. 9143302

BMW E93 Cabrio Convertible Rear Wiring Loom Harness Trunk Lid 9143302

€56.95

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

€37.95

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Part no. 9188877

BMW F01 F02 F03 F10 F11 Steering Column Adjuster Switch 9188877

€23.95

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Part no. A1568200089

Mercedes W176 W246 Tailgate Aerial Antenna Amplifier Unit A1568200089

€23.95

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Part no. A2135401217

Mercedes W213 OM642 Diesel Engine Alternator Wiring Loom Harness A2135401217

€47.95

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Part no. A2465403005

Mercedes W176 W245 Front Right Door Wiring Loom Harness A2465403005

€23.95

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Part no. 4K9035225P

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

€23.95

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Part no. 5B44D47

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

€227.95

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Part no. 8U0971687J

Audi Q3 8U Door Loom Wiring Harness Cable Rear Left Right N/O/S 8U0971687J

€32.95

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Part no. 8612578

BMW F45 HV Accumulator Battery Negative Ground Cable Wiring Plug 8612578

€23.95

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Earth Ground Cable BMW i3 I01 Battery Starter Terminal Wiring 8631637

€28.95

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Part no. 03L906018KD-1

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

€237.95

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Part no. 9151517

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

€23.95

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Part no. 8F0959655

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

€28.95

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Part no. 8714367

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

€28.95

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Part no. A0009828323

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

€23.95

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Part no. 8580061

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

€23.95

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

€23.95

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Land Rover Discovery Sport L550 Battery Wiring Harness Cable Lead FK72-14A280-AC

€42.95

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Mini Cooper Cabrio R52 Battery Cable Plus Pole 7541084

€23.95

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Part no. A6269010000-1

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

€427.95

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Part no. 9313636

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

€23.95

Free delivery: Sep 14 – 15

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Part no. 03C906016FR-1

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

€132.95

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

€37.95

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Part no. M8D2-14E159-AJ

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

€23.95

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Mercedes X253 Engine Wiring Cable Cover Duct Bracket Channel OM654 A6541592200

€42.95

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Part no. MK83-14E159-AK

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

€89.95

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Part no. L8B2-14D619-AG

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

€23.95

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

€56.95

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Bluetooth Module Mercedes W203 W211 W219 Control Unit Hands Free A2118700026

€32.95

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Mercedes W204 W211 Gearbox Control Unit Module Automatic 722.9 A0002703252

€189.95

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Part no. 1K0907115

Volkswagen Golf V GTI 2.0 TFSI AXX 200HP Engine Control ECU Kit 1K0907115 Manual

€146.95

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

€94.95

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Ford Transit Courier Battery Tray Housing Cover Support Holder Mount JT7610723AC

€75.95

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Part no. ML34-13C148-AE

VW Volkswagen Amarok NF Front Lamp Headlight Control Unit Module ML3413C148AE

€70.95

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€23.95

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

€23.95

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

€23.95

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

€42.95

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€23.95

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

€23.95

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

€23.95

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

€23.95

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Audi Q7 4L Relay Unit Module 4 Pins 8D0951253

€23.95

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Mercedes C117 PDC Parking Sensor Control Module Unit ECU A0009001705

€61.95

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Part no. 8577625-4

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

€222.95

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€23.95

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

€23.95

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€23.95

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Part no. L9W3-14D550-BA

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

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