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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Ford Ranger Mk4 Door Interior Speaker Loudspeaker UM4766960

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06D903016

Audi A4 S4 8H A6 S6 4B Alternator Generator 14V 150A 2.0 Petrol BWE 06D903016

€51.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6991401

BMW G20 330e Hybrid Jump Start Positive Terminal 6991401

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5N0035342E

VW Volkswagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342E

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8W0959655AD

Audi A5 F5 Air Module Control Unit ECU 8W0959655AD

€113.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q0959107M

Volkswagen Tiguan Mk2 Electric Boot Lid Tailgate Control Unit Module 5Q0959107M

€137.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. F1FT-10C679-CB-1

Ford Transit Connect Mk2 Battery Negative Earth Lead Cable F1FT-10C679-CB

€23.95

Free delivery: Sep 15 – 16

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Part no. 7187221

BMW F01 F02 F03 LCI Rear Third Stoplamp Stop Lamp Brake Light 7187221

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. C1BT-14D624-AAC

Ford Fiesta Mk7 Door Jumper Cable Wiring Loom Left Right N/O/S C1BT-14D624-AAC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8634244

Engine Wiring BMW F45 Mini F60 B38 Loom Harness Injection Valve Ignition 8634244

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HK72-19C164-ZD

Land Rover Discovery Sport L550 Audio Speaker Amplifier HK72-19C164-ZD

€241.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8J0907361

Audi TT 8J Central Electric System Fuse Box Housing Bracket Retainer 8J0907361

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 059907309L-1

Audi A6 C8 A7 4K 3.0TDI Quattro CCVB 286HP Engine ECU Kit 059907309L Automatic

€408.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DV6T-14A073-SM

Ford Transit Connect BCM Body Control Module Fuse Box Unit DV6T-14A073-SM

€80.95

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Part no. DV6T-14A076-AB

Ford Transit Connect Mk2 Fuse Box Cover Lid Trim DV6T-14A076-AB

€42.95

Free delivery: Sep 15 – 16

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Part no. 8W8035225M

A5 F5 Radio Aerial Antenna Amplifier Booster Module Upper Right O/S 8W8035225M

€56.95

Free delivery: Sep 15 – 16

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Part no. A1664401606

Mercedes W166 Rear Door Wiring Harness Cable Loom Left Right N/O/S A1664401606

€23.95

Free delivery: Sep 15 – 16

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Part no. 5K0962131

Volkswagen Tiguan 5N Audi Q3 8U Keyless Antenna Amplifier Unit 5K0962131

€23.95

Free delivery: Sep 15 – 16

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Part no. 8P0907115K

Audi A3 8P 2.0 TFSI BWA 200HP Engine Control Unit Module ECU 8P0907115K Manual

€132.95

Free delivery: Sep 15 – 16

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Part no. 9142400

BMW Mini Cooper R55 R56 R57 Passenger's Door Module Cables N/S 9142400

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6M21-13405-FG-2

Ford Galaxy Mk2 Outer Tail Light Lamp Rear Left N/S Harness Loom 6M21-13405-FG

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5F0945307K-2

Seat Leon Mk3 Cupra Rear Tail Light Lamp LED Wiring Inner Left N/S 5F0945307K

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1507422

Ford Fiesta Mk5 Fuse Box Power Distribution Junction Relay 2S6T-14A073-BC

€23.95

Free delivery: Sep 15 – 16

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Part no. 7P5971384J

Porsche Cayenne 92A Seat Backrest Wiring Loom Cable Left Right N/O/S 7P5971384J

€42.95

Free delivery: Sep 15 – 16

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Part no. A1729007313

Mercedes SLC R172 PDC Parking Sensor Module Unit ECU A1729007313

€75.95

Free delivery: Sep 15 – 16

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Part no. DT1113C148AD

Ford Transit Connect Mk2 Headlight Module Control Unit ECU DT11-13C148-AD

€61.95

Free delivery: Sep 15 – 16

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Part no. 5Q0962131-1

Audi A3 8V Q3 F3 VW Golf M7 Antenna Control Module Keyless Entry Line 5Q0962131

€23.95

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Part no. BS7T-14B321-AD

Ford Mondeo Mk4 Air Control Module ECU Restraint BS7T-14B321-AD

€42.95

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Part no. A2514402409

Mercedes W251 V251 Rear Door Wiring Loom Harness Cable Right O/S A2514402409

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9350314

BMW G30 G31 G11 G12 G32 G38 Front Power Distribution Fuse Box Left N/S 9350314

€28.95

Free delivery: Sep 15 – 16

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Part no. M8D2-14N164-AB

Land Range Rover Evoque L551 Battery Cable Harness Loom Cable M8D2-14N164-AB

€94.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9269941

BMW X1 E84 Front Door Cable Harness Loom Driver Side Wiring 9233551

€32.95

Free delivery: Sep 15 – 16

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Part no. 04E903021M

Skoda Rapid NH1 1.4 TSI Petrol Alternator Generator Bosch 04E903021M

€37.95

Free delivery: Sep 15 – 16

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Part no. 3C8971693DM

VW Volkswagen Passat CC Rear Door Wiring Harness Cable Left N/S 3C8971693DM

€37.95

Free delivery: Sep 15 – 16

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Part no. 1693500

Ford Transit Mk7 Engine Compartment Fuse Box Lid Cover 6C1T-14A076-AA

€23.95

Free delivery: Sep 15 – 16

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Part no. BJ32-2C496-AG

Land Rover Range Rover Evoque L538 Parking Brake Control Module BJ32-2C496-AG

€47.95

Free delivery: Sep 15 – 16

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Part no. 6850955

Brake Control Unit BMW F10 F11 X3 F25 Parking Brake Handbrake Module EMF 6850955

€23.95

Free delivery: Sep 15 – 16

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Part no. 8E5035225S

Audi A4 RS4 B7 Window Antenna Aerial Amplifier Module Unit 8E5035225S

€85.95

Free delivery: Sep 15 – 16

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Part no. 5B32403

Mini F66 LED Daytime Driving Light Module Left N/S 5B32403

€66.95

Free delivery: Sep 15 – 16

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Part no. 4348654

Ford Ranger Mk4 Starter Motor 2.5 TDCi 4x4 Diesel 12V 1715411 4348654

€47.95

Free delivery: Sep 15 – 16

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Part no. 8586540-3

BMW F30 F32 LCI 330d 430d N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key

€203.95

Free delivery: Sep 15 – 16

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Part no. 1T0941329-1

VW Volkswagen Sharan 7N Headlight Cornering Ballast Module 1T0941329

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FT1T-15K857-AUE

Ford Transit Connect Centre Console Wiring Loom Harness Cable FT1T-15K857-AUE

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9676399880

Citroën C4 Grand Picasso Air Module Module Control Unit 9676399880

€47.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1695400362

Mercedes W169 W245 Parking Sensor Control Module ECU Unit A1695400362

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7621178-6

BMW E81 E87 LCI E90 N43 122HP Engine Control ECU Kit DME 7621178 Automatic

€108.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. BJ32-17509-AC

Range Rover Evoque L538 Control Unit Module BJ32-17509-AC

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F0919813E

Audi A4 B8 Chip Card Reader for Road Toll ETC Japan Module Unit 4F0919813E

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9393660

BMW F10 Central Gateway Module Control Unit Lear ZGW-02 4SK 9393660

€51.95

Free delivery: Sep 15 – 16

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Part no. 8E0907307C

Audi RS4 B7 4.2 Servotronic Relay Control Unit 8E0907307C

€70.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DG9T-9B243-BB

Ford Mondeo Mk5 Rear Body Wiring Harness Fuel Filler Flap Cable DG9T-9B243-BB

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. YTB500132

Land Rover Discovery 3 L319 Battery Cable Negative Wrinig Harness YTB500132

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8714476

Door Wiring BMW F40 Driver Side Door Cable Harness Loom 8714471

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469064201

Antenna Amplifier Mercedes X117 W176 W205 Rear Aerial Module A2469064201

€23.95

Free delivery: Sep 15 – 16

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Part no. 6844126

On-Board Screen BMW F20 F30 LCI Information Display Touch Monitor 8,8" 6844126

€569.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5A7A0C5

BMW U06 X1 U11 Fuel Injector Electrical Wiring Harness Cable B38 Petrol 5A7A0C5

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7856819

Battery Cable BMW F90 M5 F91 M8 Wire Lead Positive Alternator Starter B+ 7856819

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5Q4959392C

Skoda Octavia 5E Front Door Control Module Unit Passenger Side 5Q4959392C

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6856823-2

Mini R55 R56 LCI Steering Rack Electric Power Steering Wire Harness 6856823

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7P0937211A

Porsche Cayenne 92A 3.0 TDI Fuse Box Relay Control Module 7P0937211A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. VIBE-AMPLIFIER-1

Vibe Powerbox 100.4M-V0 960W Mini D Audio Amplifier Module ECU

€237.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469009413

Mercedes W176 W246 Control Unit Body Control Module ECU A2469009413

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8V5971687Q

Audi A3 8V Door Wiring Harness Loom Rear Left Right N/O/S 8V5971687Q

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 03L907309R-1

Volkswagen Caddy Mk3 2.0 TDI CFHC 140HP Engine Control ECU 03L907309R Manual

€165.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4F1971036A

Audi A6 C6 Front Passenger Door Wiring Left N/S Harness Loom Cable 4F1971036A

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A0001502780

Mercedes W203 CL203 W204 M272 Petrol Ignition Coil Cable Connector A0001502780

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5WA959436P

Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5WA959436P

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6940298-1

BMW E60 Air Module Control Unit Gateway Sensor B Pillar Right O/S 6940298

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 1456887

Ford Transit Tourneo Glow Plug Wire Assembly 2.2 TDCi 1456887 6C1Q-6M091-AD

€37.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6947196-1

Mini R52 Sat Nav GPS Satellite Navigation Dashboard Head Unit Display 6947196

€189.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 06A906032DR-1

Volkswagen Golf GTI Mk4 1.8 T AUM 150HP Engine Control Unit ECU Kit 06A906032DR

€142.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. AV1T-14A584-CDD

Ford B-Max Door Loom Wiring Harness Cable Driver Side Front AV1T-14A584-CDD

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2124400414

Mercedes C207 W207 W212 Fuel Pump Module Diesel Control Unit ECU A2124400414

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. DPLA-15C859-DL

Range Rover Evoque L538 PDC Parking Sensor Control Unit DPLA-15C859-DL

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A1779069601

Mercedes W177 W247 Fuse Box Front Relay Engine Control Unit Module A1779069601

€42.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5615H2

Peugeot 308 T7 Battery Box Tray Holder Housing Mount 9663615380

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9225014-1

BMW F23 F30 Distributor External Ignition Base Control Unit Module 9225014

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2465401350

Fuse Box Mercedes W156 W176 W246 Front Relay Control Unit Module A2465401350

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2829003300-1

Mercedes W177 A180 282.914 136HP Petrol ECU Kit A2829003300 Key BCM Automatic

€246.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 4G0907589F

Audi A7 4G 3.0TDI CVUA 320HP Quattro Engine Control ECU Kit 4G0907589F Automatic

€650.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 0AM911023R

Audi A3 8V 1.4 TSI Petrol Starter Motor Engine Actuator Unit 0AM911023R

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9393671

BMW F12 LCI Junction Box Module Control Unit V12 9393671

€75.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6905950

BMW X5 Series E53 Spoiler Dualband Antenna Amplifier Aerial 6905950

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6809475

Mini Cabrio F57 Door Harness Wire Wiring Loom Driver's Side 6809475 9389208

€80.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2469009615

Mercedes W176 W246 PDC Parking Control Module A2469009615

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7835431

Carrier Air Conditioner BMW E60 M5 E61N E63 E64 M6 Compressor 7835431

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6990090

BMW E61 E63 E90 E92 F06 Mini R55 R56 Trap Circuit Antenna 6990090

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A2115405707

Mercedes C219 Power Steering Rack Pump Wiring Harness Cable A2115405707

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7550975-1

Starter BMW E81 E82 E87N E88 E90 E91 E92 N43 Starter Motor 7550975

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 5F0945308K-2

Seat Leon Mk3 Cupra Rear Tail Light Lamp LED Wiring Inner Right O/S 5F0945308K

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. HPLA-14D620-BD

Range Rover Sport L494 Door Control Unit Module Rear Right O/SHPLA-14D620-BD

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 079903805J

Audi A4 B6 B7 4.2 V8 FSI Alternator Bracket Mount Holder 079903805J

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. M8D2-14A104-BA

Land Rover Range Rover Evoque L551 Heater Control Wiring Harness M8D2-14A104-BA

€32.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 9247081

BMW X1 E84 Wiring Loom Harness Passenger Side 9247081

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. A9065460643

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 8716572

BMW G20 G21 G80 G80 LCI Door Trim Panel Wiring Loom Harness Rear 8716572

€28.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 6927311

BMW E60 Front Seat Control Unit Module Controller ECU 6927311

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. 7520912-1

BMW E60 E61 E63 E64 LCI Lid Cover Panel Electronic Box 7520912

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

Part no. FU5T-14B192-AA

Ford Transit Mk8 Relay 5-Pin Blue FoMoCo FU5T-14B192-AA 4RC933364

€23.95

Free delivery: Sep 15 – 16

If paid before 14:00

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