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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Range Rover Sport L494 Battery Terminal Fuse Box Module Unit 19249000001

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. BK2T-14A175-CA

Ford Transit Custom MK8 Fuse Relay Box Control Unit Module BK2T-14A175-CA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K5945095AA-1

Audi A4 B8 Saloon Rear Lamp Tail Light Wiring Harness Plug Left N/S 8K0973706

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJA6703AA

Jaguar XK8 X100 Brown Fuse Relay Module Unit 12V LJA6703AA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1765450000

Mercedes-Benz A-Class W176 Bluetooth Unit Module Bracket Holder A1765450000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0971104J

Audi A8L 4H Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 4H0971104J

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5B7AB40

BMW F74 Gran Coupe Central Bass Speaker Right O/S 5B7AB40

€142.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0045468440

Mercedes W177 Power Distributor Connector Plug Unit A0045468440

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V3971036

Audi A3 S3 8V Front Door Card Wiring Harness Passenger Side 8V3971036

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0919604H-2

Audi A8 4H Head Up Display Hud Project Screen Control Unit Module 4H0919604G

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9290611

Mini Cooper R57 LCI R58 R59 Passenger Door Wiring Loom Harness Cables

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. VW-Remote-Key

VW Passat Radio Remote Control Alarm Key Fob Control Unit Module

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YTA000010

Range Rover L322 Positive Plus + Starter Wiring Harness Cable 4.4 1H4Z-14N144-EA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. KT1T18B955EB

Ford Transit Connect Mk2 II Dashboard Display Screen Panel KT1T-18B955-EB

€123.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DN1T-15K600-ED

Ford Fiesta Mk7 Transit Courier Body Control Module BCM ECU DN1T-15K600-ED

€51.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0945093H-2

Audi A8 D4 Rear Taillight Tail Light Lamp Wiring Inner Left N/S 4H0945093H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9P4971111

Porsche 718 Boxster 982 Power Steering Rack Wiring Loom 9P4971111

€61.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2129006417-1

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

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8W0907064BC

Audi A4 B9 Body Comfort Control Module ECU Unit 8W0907064BC

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14A584-BDE

Ford Fiesta Mk7 Door Wiring Loom Harness Front Right O/S C1BT-14A584-BDE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A0045428718-BEB

Mercedes R171 W203 Parking Distance Sensor PDC Benitoite Blue - 950 A0045428718

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9137703

Mini Cooper One R55 R56 Door Wiring Harness Factory Right O/S 9137703

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 0AM911023T

Volkswagen Touran 1T 1.4 TSI Petrol Engine Starter Motor 0AM911023T

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8509035-1

BMW E60 LCI 530d X5 E70 3.0d M57N2 235HP Engine ECU KIT DDE 8509035 CAS3 + Key

€379.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6866992

BMW F06 F07 GT F11 F12 F13 Air Control Module Unit Controller 6866988

€99.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AV1T-14A584-HCD

Ford B-Max Mk1 Door Loom Wiring Harness Cable AV1T-14A584-HCD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 070906016AJ

VW Transporter T5 Engine Control Unit ECU 2.5 TDI 130HP Automatic 070906016AJ

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7PP907283

Audi RS6 C7 Tire Tyre Pressure Monitor System Moduel Control Unit ECU 7PP907283

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8X0035223D

Audi Q3 8U Amplifier BOSE Premium Audio Sound System Module 8X0035223D

€85.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6519007600-6

Mercedes W176 651.901 Engine ECU 136HP Manual A6519007600 Kit Ignition + Key

€165.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LJA1975AI

Jaguar Xk8 X100 Accelerometer Adaptive Control Damping Unit Sensor LJA1975AI

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0937517

Audi A8L 4H Fuse Relay Battery Junction Box Housing 4H0937517

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1K0971230KE

Volkswagen VW Caddy 2K Alternator Wiring Loom Harness 1.9 TDI 1K0971230KE

€23.95

Free delivery: Nov 12 – 13

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Part no. 4K0971237

Audi A6 C8 A7 4G Engine Earth Line Ground Wiring Harness Cable 4K0971237

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K9035225B

Audi A6 C8 Antenna Aerial Amplifier AMP 4K9035225B

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4K0907347B

Audi A6 C8 Mild Hybrid Power Distribution Mount Bracket Support 4K0907347B

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9387164

BMW X3 F25 Front Lamp Headlight Control Module Unit ECU 9387164

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8793254

Door Wiring BMW X3 G01 F97 X4 G02 F98 Cable Harness Rear Left Right N/O/S

€23.95

Free delivery: Nov 12 – 13

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Part no. CH22-15K801-BB

Range Rover Sport L320 5 Button Smart Key Fob CH22-15K801-BB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9V4T-14A076-AB

Ford Kuga C394 Fuse Box Lid Cover Panel Housing Top 2.5 Petrol 9V4T-14A076-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DK62-14300-CE

Range Rover L405 Fuse Box Power Terminal Wiring Harness Cable DK62-14300-CE

€47.95

Free delivery: Nov 12 – 13

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Part no. GK3T-14A120-AD

Ford Transit Mk8 Battery Cable Wire 2.0 TDCi Diesel GK3T-14A120-AD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9384988

BMW F20 F45 F46 Kafas Camera Control Module Unit ECU 9384988

€23.95

Free delivery: Nov 12 – 13

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Part no. YML500861

Land Rover Range Rover Sport L320 Driver's Seat Wire Harness Cable YML500861

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9247088

BMW X1 Series E84 Wiring Loom Harness Passenger Side 9233559

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2125403005

Mercedes W212 M271 Wiring Battery Alternator Starter Harness Cable A2125403005

€113.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4H0945095H-2

Audi A8 D4 Rear Outer Tail Light Lamp LED Wiring Cable Left N/S 4H0945095H

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2819006904

Smart 453 M281.910 90HP Engine Control Unit ECU A2819006904 Automatic

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1734633

Ford Fiesta MK7 1.6 TDCI Starter Motor Engine Diesel 8V2111000AD

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 038907282

VW Volkswagen Transporter T5 Spark Plug Glow Plug Relay Module Unit 038907282

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 99161010500

Porsche Cayman 981 718 982 Fuse And Relay Box Petrol 99161010500

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048708026

Mercedes W204 Media Interface Control Unit Module ECU A2048708026

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8V5035225

Audi A3 8V Keyless Entry Amplifier Control Box Module Aerial Antenna 8V5035225

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5N0971858E

VW Volkswagen Tiguan 5N Starter Retaining Plate Bracket Mount Support 5N0971858E

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FV6T-14A280-BAE

Ford Transit Connect Cable Alternator Starter Battery Wiring FV6T-14A280-BAE

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 06A903143P

Audi TT 8N Alternator Bracket Mount Holder 06A903143P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 1871334

Ford Focus Mk3 Kuga C-Max S-Max Starter Motor 1.5 Petrol EcoBoost F1FT-11000-MA

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8654460-2

Mini Cooper F54 F55 136HP Petrol B38 Engine ECU Kit DME 8654460 + BDC + Key

€370.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8K0972994

Audi A5 S5 RS5 F5 Seat Exeo Wiring Loom Harness Plug Connector Housing 8K0972994

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8519663-16

Mini Cooper SD R60 R61 ALL4 N47N 143HP ECU Kit DDE 8519663 CAS3 Key Manual

€194.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. W164-JUNSUN

Mercedes W164 X164 Junsun Car Radio 10.1"Android CarPlay 32GB XT8191CX-F

€170.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9118611

BMW Z4 E86 Hifi Audio Sound AMP Amplifier Module 9118611

€574.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 059907309AC-1

Audi Q7 4M 3.0 TDI DPXA 286HP Quattro Engine Control ECU 059907309AC Automatic

€550.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2128208826

Mercedes W212 Door Control Module Unit ECU Rear Right O/S A2128208826

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2048700594-1

Mercedes W204 Radio Player COMAND Navi CD Head Unit A2048700594

€94.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 7L0907719

Volkswagen Touareg 7L Anti Theft Alarm System Control Module Unit ECU 7L0907719

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. EB3T-14603-A

Ford Ranger Mk3 T6 Positive Battery Cable Lead Terminal Harness EB3T-14603-A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. FK72-14E112-AB

Land Rover Discovery Sport L550 Rear Bumper PDC Control Module FK72-14E112-AB

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8647878

BMW X5 F15 N20 Petrol Sensor System Engine Wiring Harness Cable Loom 8647878

€175.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR047573

Range Rover Evoque L538 2.2 TDCI Starter Motor EJ3211001AB

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. AH42-14D374-AF

Land Rover Range Rover L322 Air Module Control Unit AH42-14D374-AF

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2389055000

Mercedes W205 Antenna Aerial Amplifier Duplexer Module Receiver Unit A2389055000

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2055402850

C205 Fuse Box Mercedes C205 Electrical Interior Relay Fuse Socket Control A2055402850

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9224177-1

BMW F10 F11 F12 F13 F15 F16 Air Module Crash Sensor 9224177

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9128569-2

Wiring Harness BMW E81 E82 E87 LCI E88 Air Valve Air Flap Cable Wire 9128569

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 4M0959792E

Audi A5 F5 Door Module Control Unit ECU Front Passenger Side 4M0959792E

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6863385

BMW F20 F21 F30 F31 ECU ICM Plus Control Unit Module Airbag 6863385

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2139004625

Mercedes W213 C238 C253 C257 Air Module Control ECU Sensor A2139004625

€80.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. HPLA-70011-AB

Range Rover Sport L494 Battery Cable Wire Positive Lead HPLA-70011-AB

€47.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2429004801

Mercedes W176 W204 W212 Telematics Communication Control Unit Module A2429004801

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8T0971029S

Audi A5 8T Door Wiring Loom Harness Cable Front Left N/S 8T0971029S

€42.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. YMZ500810C

Land Rover Range Rover Sport L320 Towing Wiring Loom Harness Cable YMZ500810C

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5QF802717A

Audi RSQ3 F3 Battery Holder Cover Bracket Mount Retainer Lid Top 5QF802717A

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A6081550035

Mercedes W177 Alternator Mounting Bracket Carrier A6081550035

€66.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5F4971035AE

Seat Leon Mk3 5F Door Wiring Loom Cable Front Driver Side O/S 5F4971035AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 3Q0959435P

Skoda Kamiq NW Karoq ND VW Passat 3G Keyless Entry Control Module ECU 3Q0959435P

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

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Vauxhall Movano C 2.2 BlueHDI B22LUE 140HP Engine ECU Unit 46354796 Manual

€664.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 14B296AA

Ford Transit Connect Yaw Sensor ESP Speed Sensor Control Unit Module 14B296AA

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 03L906018BQ

Skoda Yeti 5L Engine Control Unit ECU 2.0 TDI 110HP CFHF 03L906018BQ Manual

€132.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9297897

BMX X4 F26 X6 F16 Cental Woofer Speaker Audio Unit Left Right N/O/S 9297897

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. C1BT-14240-ADD

Ford Fiesta Mk7 Door Wiring Loom Harness Rear Right O/S C1BT-14240-ADD

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. CV6T-14B531-DB

Ford Kuga C520 Front Door Module Control Unit Driver Side CV6T-14B531-DB

€32.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 5K0907115K-1

Volkswagen Golf Mk6 Engine Control ECU Kit 2.0 Petrol 235HP 5K0907115K Manual

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A1665402709

Mercedes W166 Automatic Gearbox Wiring Loom Harness Cable A1665402709

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. GR3T-19C107-KK

Ford Mustang Mk6 GT Radio Stereo Multimedia Player Head Unit GR3T-19C107-KK

€465.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6G9N-17D547-AE

Ford Galaxy Mk2 Windscreen Front Window Rain Sensor Bosch 6G9N-17D547-AE

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2205401124

Mercedes CL S Class C215 W220 Fuse Box Unit Front Right O/S ECU A2205401124

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. A2218706887

Mercedes W221 Head Unit Multimedia TV Player CD Changer Inverter A1679001014

€569.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. LR034027

Range Rover Sport L494 Engine Starter Motor Unit 3.0 Diesel CPLA-11001-BE

€89.95

Free delivery: Nov 12 – 13

If paid before 14:00

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