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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Audi A4 B9 A5 F5 Starter Motor Battery Cable Wiring Harness 8W0971228BH

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3456421

Mini Roadster R59 Aerial Roof Antenna Base Module 3456421

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LU5T-14B533-AF

Ford Puma Mk2 Door Control Module ECU Front Passenger Side LU5T-14B533-AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3450286

BMW X3 E83 LCI N47 Earth Cable Flow Electric Battery Negative 3450286

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P4971687R

Audi A3 8P Door Harness Loom Cable Wiring Rear Right O/S 8E0971687L

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218700992

Mercedes W221 Rear Seat Bench Module Control Unit Controller A2218700992

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971030L

Audi A5 8T Door Wire Harness Loow Wiring Passenger Side 8T0971030L

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A4518200015

Smart Fortwo C451 USB Aux Audio Input Port Connector A4518200015

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420035223C

Audi R8 42 Spyder Audio Amplifier System Unit Control Unit Module 420035223C

€417.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. RVH500110

Range Rover Sport L320 Anti Roll Suspension Valve Block 5H32-5E487-BC

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1715409606

Mercedes R171 Wiring Cable Harness Front Passenger Door Wiring Loom A1715409606

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9389600

BMW Gran Turismo G32 Radio Aerial Antenna Amplifier AM/FM 9389600

€28.95

Free delivery: Nov 12 – 13

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Part no. 4G0971178

Audi A7 4G8 Phone Holder Docking Panel Unit Tray Base Cradle Plate 4G0971178

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X23-18D493-AG

Jaguar Xf X250 Climate Control Unit ECU Heater Module 2.7 Diesel 8X23-18D493-AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7548769-7

BMW X3 E83 2.5i Petrol M54 192HP Engine Control Unit ECU DME 7548769 Automatic

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 886500F121

Toyota Verso R2 Automatic Air Condition Body Control Module AC BCM 886500F121

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 02E911023S

Audi TT 8J 2.0 TFSI CESA Petrol Engine Starter Motor 02E911023S

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 18T0035223AH

Audi A4 B8 A5 8T Amplifier Audio Sound Booster Module Unit ECU 8T0035223AH

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B4D4C1

Mini F66 B48A20P 204HP Engine Control Unit Module ECU DME 5B4D4C1

€455.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-13404-AF-2

Land Rover Discovery L550 Rear Lamp Tillight Plug Cable Right O/S FK72-13404-AF

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971029AG

Audi A5 8T Coupe Front Door Wiring Loom Harness Driver's Side 8T0971029AG

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6402002770-1

Alternator Belt Tensioner Mercedes W169 W245 OM640 Diesel Holder Mounting Panel

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1664409708

Mercedes ML GLE W166 Starter Wiring Loom Harness Cable OM651 Diesel A1664409708

€70.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2054406633

Mercedes C205 Door Wiring Front Door Left N/S wiring Harness A2054406633

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FH22-14D374-AC

Land Rover Discovery 4 L319 Air Module Control Unit ECU FH22-14D374-AC

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9156230

BMW E60 E61 E63 Professional CCC Navigation System Controller 9159022

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9296967

BMW F10 F11 LCI PDC Wiring Loom Harness Front Parking Sensor Cable 9296967

€56.95

Free delivery: Nov 12 – 13

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Part no. 8F0971030BD

Audi A5 8F Front Door Electric Wiring Loom Harness Passenger's Side 8F0971030BD

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6429002900-10

Mercedes W164 ML350 CDI 642.820 231HP Engine ECU Kit A6429002900 Ignition + Key

€332.95

Free delivery: Nov 12 – 13

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Part no. GPLA-14F441-LD

Range Rover L494 Rear Axle Anti-Roll Bar Control Module ECU GPLA-14F441-LD

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DK52-14B518-FD

Range Rover L405 Rear Door Ambient Light Wiring Harness Right O/S DK52-14B518-FD

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-18A828-AC

Land Range Rover Sport L494 L405 Display Screen Control Module DPLA-18A828-AC

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. M9R3-19H440-BE

Range Rover Evoque L551 Keyless Entry Control Module Unit ECU M9R3-19H440-BE

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8570848

Mini Cooper One D F54 F55 F56 F57 Engine Starter Motor Diesel Bosch 8570848

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LHD-R56-CARPLAY

Mini R56 R57 Display Screen Instrument Cluster Speedo Android CarPlay 4+64GB LHD

€284.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1635400382

Mercedes ML W163 Fuse Relay Box ECU Cover Trim A1635400382

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9438239

BMW X4M F98 A/C Air Condition Climate Control Unit ECU 9439239

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9392247

BMW 2 4 F22 F23 F82 M2 F82 F83 M4 iDrive Touch TBX Module Holder Mount 9392247

€23.95

Free delivery: Nov 12 – 13

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Part no. A6569000200-1

Mercedes W213 E400d OM656.929 Diesel Engine ECU Kit A6569000200 Automatic

€569.95

Free delivery: Nov 12 – 13

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Part no. AB39-15K601-AB

Ford Ranger Mk6 Button Remote Flip Key Fob AB39-15K601-AB

€28.95

Free delivery: Nov 12 – 13

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Part no. 8W8035225

Audi A5 F5 Radio Aerial Antenna Amplifier Right Upper O/S 8W8035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1358032

Ford Focus Mk2 Engine Knock Sensor Control Unit 2.0 Petrol Engine 1S7A-12A699-BB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5A82646

Mini F65 F66 F67 Battery Housing Cover Trim Holder Mount Upper 5A82646

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7N0907530AH

Volkswagen Scirocco Mk3 Central Gateway Control Module 7N0907530AH

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. UR58-57-K30B

Ford Ranger Mk4 Air Module Control Unit ECU UR5857K30B

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M5T14B056BJ

Ford Focus Mk2 Air Module Control Unit SRS ECU Bosch 4M5T14B056BJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9228293

BMW X3 F25 Interior Door Wiring Loom Harness Cable Connector 9228293

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1178207061-2

Mercedes CLA C117 LED Headlight Lamp Front Driver's Side Wire Loom A1178207061

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0012615

Audi A6 C7 Tyre Air Pump Compressor Inflator Emergency 4G0012615

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0919603B

Audi S1 8X Stereo Display Media SAT NAV Screen MMI Multifunction 8X0919603B

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2761591125

Mercedes W205 Engine Wire Wiring Loom Harness C43 M276 Petrol A2761591125

€208.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0937517

Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06N971627B-1

Audi A3 8Y Engine Injector Module Wiring Harness Cable 2.0 TFSI 06N971627B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-14F441-LD

Range Rover L405 BCM Module Body Control Unit ECU CPLA-14F441-LD

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 2131145

Ford C-Max Battery Starter Wire Loom Harness F1FT-14A280-CCJ

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8574752-1

BMW F25 20dX B47 190HP Engine Unit ECU Kit DDE 8574752 CAS4 Key Automatic

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BG91-12A650-DG

Ford Mondeo Mk4 1.6 TDCi 115HP Engine Unit Module ECU BG91-12A650-DG Manual

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0907159C

Audi A1 8X Impact Sound Actuator Control Module 8X0907159C

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4G0907637K

Audi A7 4G8 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637K

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GH22-10E889-AD

Land Rover Discovery 4 L319 Sat Nav Display Screen GH22-10E889-AD

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9286217

BMW F31 F31 LCI Door Wiring Harness Loom Driver's Side 9286217

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YTB000080

Land Rover Freelander L314 Negative Minus Pole Battery Cable Wiring YTB000080

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971029AP

Audi A5 8F Door Wire Harness Cable Loom Wiring Front Driver's Side 8F0971029AP

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765406005

Mercedes X156 Wiring Harness Loom A1765406005

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007401-1

Mercedes W212 E250CDI Blue Efficiency OM651 204HP Engine ECU A6519007401 Key

€303.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139001710

Keyless Go Mercedes W213 W222 Keyless Entry Control Unit Module A2139001710

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2056102702

Mercedes W205 Battery B Engine Compartment Terminal Point A2056102702

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0959792M

Porsche Cayenne 92A Front Door Control Module Unit Passenger Side 4H0959792M

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7520019-1

Mini Cooper One R50 Petrol W10 W11 Engine Control Unit DME 7520019 Manual

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2469006816

Mercedes W176 W231 W246 Electric Parking Brake Control Unit Module A2469006816

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AM5T-14A597-AC

Ford C-Max Mk2 Front Windscreen Sun Light Solar Sensor Unit AM5T-14A597-AC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0959673

Audi A1 8X Windscreen Heating Control Switch 8X0959673

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0971693

Audi A4 B9 Door Trim Wiring Harness Loom Wire Rear Left Right N/O/S 8W0971693

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8631725-4

BMW F22 228i N20 245HP Engine ECU Kit DDE 8631725 FEM Module + Key Lock

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0005405950

Mercedes W906 Starter Wiring Fuse Box Terminal Block Cable Harness A0005405950

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9301523

BMW 5 Series F07 F10 F11 CAS4 Control Unit Key Reading Module 9301523

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GC3T-14F014-AB

Ford Focus Mk3 USB SD Card Module Reader Port Socket GC3T-14F014-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 284B13345R

Mercedes Citan W415 Renault Kangoo Body Control Module BCM Unit 284B13345R

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055406292

Mercedes C205 Rear Parking PDC Sensor Loom Wiring Harness Cable A2055406292

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9218702

Rain Sensor BMW F10 F11 Light Solar Fogging Control Unit 9218702

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 420035225R

Audi R8 42 Spyder Gen 1 Audio Antenna Amplifier Module Unit 420035225R

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5E0959752D

Skoda Octavia Mk3 Vr 3 Button Flip Car Key Fob Remote Transponder 5E0959752D

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9N-14D054-AB

Land Rover Freelander 2 Trailer Tow Control Module ECU 6G9N-14D054-AB

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X2T-14290-VD

Jaguar XF X250 Fuse Box Relay Control Unit Module 2.7 Diesel 8X2T-14290-VD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CPLA-17D547-AC

Land Rover Range Rover L405 Windscreen Rain Sensor Module CPLA-17D547-AC

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EX23-10K699-BA

Jaguar XF X250 Positive Battery Wire Loom Cable 2.2 D Diesel EX23-10K699-BA

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0035670KX

Audi A8 D4 MMI 3G+ DVD Information Reader Electronics Control Unit 4H0035670K

€336.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH22-10D893-AB

Land Rover Discovery 4 L319 Bluetooth Phone Control Module ECU AH22-10D893-AB

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0959354E

Seat Ibiza 6J Crash Impact Sensor 5N0959354E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJG2800AA

Jaguar XK8 X100 Fuse Box Fusebox Control Relay Unit Driver Side LJG2800AA

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0945096-1

Audi A5 8T Rear Tail Light Lamp Wiring Cable Plug Right O/S Outer 8T0945096

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3WA959595A

Audi A3 RS3 8V Door Control Unit ECU Module Front Driver's Side 3WA959595A

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5GV051629E

Volkswagen Smart DataPlug Bluetooth OBD Smartphone Connect Dongle 5GV051629E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6401500734

Mercedes W169 W245 A200 B200 CDI OM640.941 140HP Engine Module ECU A6401500734

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8F0971035D

Audi A5 S5 8F Door Trim Panel Wiring Harness Loom Driver's Side 8F0971035D

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Mercedes SLK R172 GPS Navigation System Screen Display A1729000102

€118.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-15K603-BA

Ford Fiesta Mk7 Aerial Antenna Amplifier Control Unit Module C1BT-15K603-BA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HJ32-14463-CA

Range Rover Evoque L538 Battery Terminal Managment System HJ32-14463-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-14A073-FC

Range Rover Sport L494 Fuse Box Control Unit HPLA-14A073-FC

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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