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 F01 F02 F03 F10 F11 Steering Column Adjuster Switch 9188877

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7E0971794A-1

Volkswagen Transporter T5 Positive Battery Cable Wire 2.0 TDi CAAA 7E0971794A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1568200089

Mercedes W176 W246 Tailgate Aerial Antenna Amplifier Unit A1568200089

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2135401217

Mercedes W213 OM642 Diesel Engine Alternator Wiring Loom Harness A2135401217

€47.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2465403005

Mercedes W176 W245 Front Right Door Wiring Loom Harness A2465403005

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4K9035225P

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5B44D47

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

€227.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8U0971687J

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

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8612578

BMW F45 HV Accumulator Battery Negative Ground Cable Wiring Plug 8612578

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8631637

Earth Ground Cable BMW i3 I01 Battery Starter Terminal Wiring 8631637

€28.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 8F0959655

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009828323

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

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. LR073313

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

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A1698201185

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7541084

Mini Cooper Cabrio R52 Battery Cable Plus Pole 7541084

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9218381-2

BMW F10 F20 F30 F34 Steering Wheel Module Electronics Control Unit 9209427

€32.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. A6541592200

Mercedes X253 Engine Wiring Cable Cover Duct Bracket Channel OM654 A6541592200

€42.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 7839662

BMW E90 E92 E93 LCI Cable Alternator Starter Base B 7839662

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1EA907376B

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

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2118700026

Bluetooth Module Mercedes W203 W211 W219 Control Unit Hands Free A2118700026

€32.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. A1698207526-1

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06L907309E

Audi A4 B9 2.0 TFSI DLVA 190HP Engine Control Unit ECU 06L907309E Automatic

€99.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK3T-18D815-BE-1

Ford Transit Mk8 PhoneRadio Panel Media Head Unit Control Panel BK3T-18D815-BE

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 8D0951253

Audi Q7 4L Relay Unit Module 4 Pins 8D0951253

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0009001705

Mercedes C117 PDC Parking Sensor Control Module Unit ECU A0009001705

€61.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 8V4T-15K867-ABA

Ford Kuga Mk1 C394 Front PDC Parking Sensor Wiring Harness 8V4T-15K867-ABA

€42.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. A1698201285

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

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 2K5971206

VW Volkswagen Caddy Maxi 2k Radar Sensor Plug Loom Adapter Cable 2K5971206

€37.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 9847136

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

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9862369

BMW F40 F44 Electric Motor Fan Relay Bracket Carrier Mount Holder 9862369

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 8T0862335D

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

€23.95

Free delivery: Aug 10 – 11

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: Aug 10 – 11

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: Aug 10 – 11

If paid before 14:00

Part no. 6906598

Mini Cooper One R50 R52 R53 JCW Fuse Relay Electrical Box Housing 6906598

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DS7T-19G317-BG

Ford Ranger Mk3 Power Inverter Converter Module Control Unit DS7T-19G317-BG

€56.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 5K0907539

VW Volkswagen Golf Mk6 5K Dashboard Light Sun Solar Sensor Unit 5K0907539

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2133401800

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401800

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8T0907468AH

Audi A4 Allroad Avant A5 S5 Q5 RS5 Diagnosis Inteface Gateway Module 8T0907468AH

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3C5035534F

Audi A3 8P Cabrio Antenna Amplifier Aerial Module Control Unit 3C5035534F

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. BK2V-14A073-AA

Ford Transit Mk8 Fuse Box Relay Control Module 2.0 EcoBlue BK2V-14A073-AA

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8518268

BMW E90 E91 LCI N47N 318d Diesel Engine Control Unit DDE ECU Manual 8518268

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 06M907309D-1

Audi SQ5 FY 3.0 TFSI 354HP CWGD Quattro Engine ECU Kit Gateway + Key 06M907309D

€617.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4H0907064GN

Audi A6 C7 A7 4G Body Comfort Control Module Unit BCM 4H0907064GN

€75.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8612582

BMW F45 Mini F60 HV Accumulator Battery Positive B+ Cable 8612582

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2059003222

Door Module Mercedes W205 W253 Control Unit Module Front Right O/S A2059003222

€37.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GTC055R

Mercedes W207 W212 Display Screen Android Navigation Infotainment Unit GTC055R

€265.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2055459500

Mercedes C205 Audio Amplifier Module Bracket Mount Holder Support A2055459500

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-19H440-AF

Land Rover Discovery 4 L319 Keyless Entry Control Module DPLA-19H440-AF

€70.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. HJ32-14301-AA

Land Range Rover Evoque L538 Negative Battery Cable Lead Wire D HJ32-14301-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2479052404

Mercedes Sprinter W907 Remote Ignition Key Control Unit Fob A2479052404

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DPLA-14F026-AF

Range Rover Vogue L405 Camera Control Unit Module ECU DPLA-14F026-AF

€108.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6949229

Mini R52 Cabrio Convertible DWA Rear Door Alarm System Module Unit 6949229

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 2K0971558B

VW Volkswagen Caddy 2k Door Wire Harness Cable Front Right O/S 2K0971558B

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6928350

BMW E87 LCI Roof Headliner Interior Lighting Wiring Loom Harness 6928350

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. DH22-14B192-CA-1

Range Rover Evoque L538 Relay 5-Pin Unit 12V 40A Grey DH22-14B192-CA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4869809-3

BMW E82 E88 Rear Lamp Taillight Tail Light Left N/S Harness Wire Loom 7285641

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9805075680

Citroen Relay Peugeot Boxer III Engine Glow Plugs Wiring Harness 9805075680

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4535400050

Smart Fortwo W453 Fuse Module Relay Box Module A4535400050

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A0025428919-1

Mercedes W176 W246 Relay 5-Pin Yellow Hella 12V SET X2 A0025428919

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 4F0867749A

Audi A6 C6 Battery Hold Down Strap Support Securing Holder Belt 4F0867749A

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6926433

BMW 1 3 Series E87 E90 E91 Mini R56 R57 Seat Control Unit Module Heating 6926433

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6C1T-14A076-A

Ford Transit Fuse Box Cover Electrical Unit Housing Lid Trim Cap 6C1T-14A076-A

€32.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 1S0919275D-FSI

Audi Q3 8U PDC Parking Distance Control Sensor 1S0919275D Foil Silver - Z7G

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 3Q0959435D

Audi TT FV Mk3 8S Keyless Module Control Unit Comfort Access 3Q0959435D

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8639595-9

BMW F30 320iX N20 163HP Engine Unit ECU Kit DME 8639595 FEM + Key Automatic

€474.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. AM5T-14B342-AA

Ford Focus Mk3 Side Air Module Crash Impact Sensor Control Unit AM5T-14B342-AA

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2045407435

Earth Ground Cable Mercedes W204 C207 W212 Line Strap Battery Lead A2045407435

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. FK72-14D374-AK

Land Rover Discovery Sport L550 Air Module Control Unit ECU FK72-14D374-AK

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A4479060400

Mercedes W447 Fuse Relay Box Module Control Unit A4479060400

€61.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 6934030

BMW 7 Series E65 E66 Wiring Loom Harness Right O/S Front Door 6934028

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9226880

BMW F20 F21 Radio Aerial Antenna Amplifier AM/FM Control Unit Module 9226880

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 46860639

Peugeot Boxer Fuse Box Cover Lid Trim 46860639

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. A2133401900

Mercedes W205 W213 High Voltage Battery Holder Mount Bracket Support A2133401900

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8369504

BMW 5 E39 Saloon Radio Signal Antenna Amplifier Coaxial Cable 8369504

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. GK2V-14301-FB

Ford Transit Mk8 Negative Battery Cable Wire Terminal GK2V-14301-FB

€66.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8612583

BMW F45 Mini F60 HV Accumulator Battery Positive B+ Cable Ground 8612583

€23.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 9286236

BMW F30 Door Wiring Front Passenger Door Loom Cables Harness F31 9286236

€28.95

Free delivery: Aug 10 – 11

If paid before 14:00

Part no. 8595865

Wiring BMW F32 F33 F36 LCI N57Z Engine Gearbox Module Wiring Harness 8595865

€89.95

Free delivery: Aug 10 – 11

If paid before 14:00

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